Definition: In this task, you are given an input list A. You need to convert all the alphabets in the list with a number representing their position in the English alphabet. E.g., replace A by 1, B by 2, a by 1, b by 2, and so on.
Input: ['T', 'k', '3321', '4243', '6943', 'R', 'o', '9283', 'g', '7975', 'f', 'p', 'T', 'x', '8751', '913', '111', '889', 'J', 'T', 'd', 'c', 'j', 'Q', 'S', 'J', '8377', 'P', 'M', '4815', 'W', '4311', 'Y', 'x', '9077', '1333', '5873']

20, 11, 3321, 4243, 6943, 18, 15, 9283, 7, 7975, 6, 16, 20, 24, 8751, 913, 111, 889, 10, 20, 4, 3, 10, 17, 19, 10, 8377, 16, 13, 4815, 23, 4311, 25, 24, 9077, 1333, 5873