You only had to read the initial lines with the letters and the correspondent 'translation'. Then, for each emoji text given, you use this dictionary created to decode it.You can achieve this using the following Python code:
```Pythonfrom pwn import remote
conn = remote('143.255.251.230', 5555)
alphabet = {}
while True:   rcv = conn.recvline()
   if rcv[0] >= ord('a'):      alphabet[rcv[4:-1]] = chr(rcv[0]).encode()
   if rcv[0] == ord('z'):      break
while True:   to_decode = conn.recvuntil(b'=> ')[:-4]   print(to_decode)
   result = b''   i = 1   while True:      if len(to_decode) == 0:         break      if to_decode[:i] in alphabet.keys():         result += alphabet[to_decode[:i]]         to_decode = to_decode[i:]         i = 0      i += 1
   print(result)   conn.send(result + b'\r\n')   print(conn.recvline())   print(conn.recvline())
conn.close()```