just a solution code, I think everything is clear
```from pwn import *import numpy as np  standard_dic = {    '$': u'  _  \n | | \n/ __)\n\\__ \\\n(   /\n |_| \n',    '(': u'  __\n / /\n| | \n| | \n| | \n \\_\\\n',    ',': u'   \n   \n   \n _ \n( )\n|/ \n',    'O': u'  ___  \n / _ \\ \n| | | |\n| |_| |\n \\___/ \n       \n',    '4': u' _  _   \n| || |  \n| || |_ \n|__   _|\n   |_|  \n        \n',    '8': u'  ___  \n ( _ ) \n / _ \\ \n| (_) |\n \\___/ \n       \n',    '<': u'  __\n / /\n/ / \n\\ \\ \n \\_\\\n    \n',    '@': u'   ____  \n  / __ \\ \n / / _` |\n| | (_| |\n \\ \\__,_|\n  \\____/ \n',    'D': u' ____  \n|  _ \\ \n| | | |\n| |_| |\n|____/ \n       \n',    'H': u' _   _ \n| | | |\n| |_| |\n|  _  |\n|_| |_|\n       \n',    'L': u' _     \n| |    \n| |    \n| |___ \n|_____|\n       \n',    'P': u' ____  \n|  _ \\ \n| |_) |\n|  __/ \n|_|    \n       \n',    'T': u' _____ \n|_   _|\n  | |  \n  | |  \n  |_|  \n       \n',    'X': u'__  __\n\\ \\/ /\n \\  / \n /  \\ \n/_/\\_\\\n      \n',    '\\': u'__    \n\\ \\   \n \\ \\  \n  \\ \\ \n   \\_\\\n      \n',    '`': u' _ \n( )\n \\|\n   \n   \n   \n',    'd': u'     _ \n  __| |\n / _` |\n| (_| |\n \\__,_|\n       \n',    'h': u" _     \n| |__  \n| '_ \\ \n| | | |\n|_| |_|\n       \n",    'l': u' _ \n| |\n| |\n| |\n|_|\n   \n',    'p': u"       \n _ __  \n| '_ \\ \n| |_) |\n| .__/ \n|_|    \n",    't': u' _   \n| |_ \n| __|\n| |_ \n \\__|\n     \n',    'x': u'      \n__  __\n\\ \\/ /\n >  < \n/_/\\_\\\n      \n',    '|': u' _ \n| |\n| |\n| |\n| |\n|_|\n',    '#': u'   _  _   \n _| || |_ \n|_  ..  _|\n|_      _|\n  |_||_|  \n          \n',    "'": u' _ \n( )\n|/ \n   \n   \n   \n',    '+': u'       \n   _   \n _| |_ \n|_   _|\n  |_|  \n       \n',    '/': u'    __\n   / /\n  / / \n / /  \n/_/   \n      \n',    '3': u' _____ \n|___ / \n  |_ \\ \n ___) |\n|____/ \n       \n',    '7': u' _____ \n|___  |\n   / / \n  / /  \n /_/   \n       \n',    ';': u'   \n _ \n(_)\n _ \n( )\n|/ \n',    '?': u' ___ \n|__ \\\n  / /\n |_| \n (_) \n     \n',    'C': u'  ____ \n / ___|\n| |    \n| |___ \n \\____|\n       \n',    'G': u'  ____ \n / ___|\n| |  _ \n| |_| |\n \\____|\n       \n',    'K': u" _  __\n| |/ /\n| ' / \n| . \\ \n|_|\\_\\\n      \n",    'O': u'  ___  \n / _ \\ \n| | | |\n| |_| |\n \\___/ \n       \n',    'S': u' ____  \n/ ___| \n\\___ \\ \n ___) |\n|____/ \n       \n',    'W': u'__        __\n\\ \\      / /\n \\ \\ /\\ / / \n  \\ V  V /  \n   \\_/\\_/   \n            \n',    '[': u' __ \n| _|\n| | \n| | \n| | \n|__|\n',    '_': u'       \n       \n       \n       \n _____ \n|_____|\n',    'c': u'      \n  ___ \n / __|\n| (__ \n \\___|\n      \n',    'g': u'       \n  __ _ \n / _` |\n| (_| |\n \\__, |\n |___/ \n',    'k': u' _    \n| | __\n| |/ /\n|   < \n|_|\\_\\\n      \n',    'o': u'       \n  ___  \n / _ \\ \n| (_) |\n \\___/ \n       \n',    's': u'     \n ___ \n/ __|\n\\__ \\\n|___/\n     \n',    'w': u'          \n__      __\n\\ \\ /\\ / /\n \\ V  V / \n  \\_/\\_/  \n          \n',    '{': u'   __\n  / /\n | | \n< <  \n | | \n  \\_\\\n',    '"': u' _ _ \n( | )\n V V \n     \n     \n     \n',    '&': u'  ___   \n ( _ )  \n / _ \\/\\\n| (_>  <\n \\___/\\/\n        \n',    '*': u'      \n__/\\__\n\\    /\n/_  _\\\n  \\/  \n      \n',    '.': u'   \n   \n   \n _ \n(_)\n   \n',    '2': u' ____  \n|___ \\ \n  __) |\n / __/ \n|_____|\n       \n',    '6': u"  __   \n / /_  \n| '_ \\ \n| (_) |\n \\___/ \n       \n",    ':': u'   \n _ \n(_)\n _ \n(_)\n   \n',    '>': u'__  \n\\ \\ \n \\ \\\n / /\n/_/ \n    \n',    'B': u' ____  \n| __ ) \n|  _ \\ \n| |_) |\n|____/ \n       \n',    'F': u' _____ \n|  ___|\n| |_   \n|  _|  \n|_|    \n       \n',    'J': u'     _ \n    | |\n _  | |\n| |_| |\n \\___/ \n       \n',    'N': u' _   _ \n| \\ | |\n|  \\| |\n| |\\  |\n|_| \\_|\n       \n',    'R': u' ____  \n|  _ \\ \n| |_) |\n|  _ < \n|_| \\_\\\n       \n',    'V': u'__     __\n\\ \\   / /\n \\ \\ / / \n  \\ V /  \n   \\_/   \n         \n',    'Z': u' _____\n|__  /\n  / / \n / /_ \n/____|\n      \n',    '^': u' /\\ \n|/\\|\n    \n    \n    \n    \n',    'b': u" _     \n| |__  \n| '_ \\ \n| |_) |\n|_.__/ \n       \n",    'f': u'  __ \n / _|\n| |_ \n|  _|\n|_|  \n     \n',    'j': u'   _ \n  (_)\n  | |\n  | |\n _/ |\n|__/ \n',    'n': u"       \n _ __  \n| '_ \\ \n| | | |\n|_| |_|\n       \n",    'r': u"      \n _ __ \n| '__|\n| |   \n|_|   \n      \n",    'v': u'       \n__   __\n\\ \\ / /\n \\ V / \n  \\_/  \n       \n',    'z': u'     \n ____\n|_  /\n / / \n/___|\n     \n',    '~': u' /\\/|\n|/\\/ \n     \n     \n     \n     \n',    '!': u' _ \n| |\n| |\n|_|\n(_)\n   \n',    '%': u' _  __\n(_)/ /\n  / / \n / /_ \n/_/(_)\n      \n',    ')': u'__  \n\\ \\ \n | |\n | |\n | |\n/_/ \n',    '-': u'       \n       \n _____ \n|_____|\n       \n       \n',    '1': u' _ \n/ |\n| |\n| |\n|_|\n   \n',    '5': u' ____  \n| ___| \n|___ \\ \n ___) |\n|____/ \n       \n',    '9': u'  ___  \n / _ \\ \n| (_) |\n \\__, |\n   /_/ \n       \n',    '=': u'       \n _____ \n|_____|\n|_____|\n       \n       \n',    'A': u'    _    \n   / \\   \n  / _ \\  \n / ___ \\ \n/_/   \\_\\\n         \n',    'E': u' _____ \n| ____|\n|  _|  \n| |___ \n|_____|\n       \n',    'I': u' ___ \n|_ _|\n | | \n | | \n|___|\n     \n',    'M': u' __  __ \n|  \\/  |\n| |\\/| |\n| |  | |\n|_|  |_|\n        \n',    'Q': u'  ___  \n / _ \\ \n| | | |\n| |_| |\n \\__\\_\\\n       \n',    'U': u' _   _ \n| | | |\n| | | |\n| |_| |\n \\___/ \n       \n',    'Y': u'__   __\n\\ \\ / /\n \\ V / \n  | |  \n  |_|  \n       \n',    ']': u' __ \n|_ |\n | |\n | |\n | |\n|__|\n',    'a': u'       \n  __ _ \n / _` |\n| (_| |\n \\__,_|\n       \n',    'e': u'      \n  ___ \n / _ \\\n|  __/\n \\___|\n      \n',    'i': u' _ \n(_)\n| |\n| |\n|_|\n   \n',    'm': u"           \n _ __ ___  \n| '_ ` _ \\ \n| | | | | |\n|_| |_| |_|\n           \n",    'q': u'       \n  __ _ \n / _` |\n| (_| |\n \\__, |\n    |_|\n',    'u': u'       \n _   _ \n| | | |\n| |_| |\n \\__,_|\n       \n',    'y': u'       \n _   _ \n| | | |\n| |_| |\n \\__, |\n |___/ \n',    '}': u'__   \n\\ \\  \n | | \n  > >\n | | \n/_/  \n',    " ": u' \n \n \n \n \n \n'}  if __name__ == '__main__':    r = remote('3.91.74.70', 1338)     for _ in range(3):        print(r.recvline())     for i in range(200):         letters_raw = [r.recvline()[:-2] for x in range(7)]         if letters_raw[0].startswith(b'>'):            letters_raw[0] = letters_raw[0][1:]         print(letters_raw)         print('\n'.join([x.decode() for x in letters_raw]))         letters = [list(x) for x in letters_raw]        letters = list(filter(bool, letters))        letters = np.array([np.array(x) for x in letters])        res = ''        while letters.shape[1] > 0:             for k, v in standard_dic.items():                 if k not in string.ascii_letters + string.ascii_uppercase + string.digits:                    continue                 letter = np.array([np.array(list(map(ord, x))) for x in v.split('\n') if x != ''])                shape = letter.shape                guessed_letter = letters[0:shape[0], 0:shape[1]]                if guessed_letter.shape == letter.shape and (guessed_letter == letter).all():                    res += k                    print(f'Found letter: {k}')                    letters = letters[:, shape[1]:]                    break            else:                print('Nothing found')                exit(0)        print(f'Solve {i}')         r.sendline(res)```
###### FLAG:securinets{w3ll_d0n3_g00d!!}