In this task, you are given an input list A comprising of numbers and alphabets. You need to extract and sort the unique alphabets in the list. The alphabets in the input list will only be in lowercase. Return -1 if there is no alphabet in the input list.

Let me give you an example: ['8129', 'a', '4245', 'y', 'm', 'a']
The answer to this example can be: a, m, y
Here is why: Here, the unique alphabets in the list are 'a', 'y', and 'm', hence their sorted order is 'a, m, y'.

OK. solve this:
['g', 'm', '8395', '1077', '9031', 'y', '8007', 'd', 'g', '2365', 'o', '7553', '9499', '8697', '8751', 'q', 'j', 'z', '8717', '7991', 'r', 'm', 'e', 'w', '5203']
Answer:
d, e, g, j, m, o, q, r, w, y, z