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: ['E', 'L', 'O', '4351', '9137', '9349', '6067', '349', 'P', '4045', 'J', 'Y', 'G', 'L', 'E', '895', 'm', '7145', 'a', '8291', 't', '3703', 'k', '7063', 't', '6951', 'Q', '1057', '9563', '8887', 'F', 'L', 'X', '1265', '7415', 'C', '3955', 'V', 'q']

5, 12, 15, 4351, 9137, 9349, 6067, 349, 16, 4045, 10, 25, 7, 12, 5, 895, 13, 7145, 1, 8291, 20, 3703, 11, 7063, 20, 6951, 17, 1057, 9563, 8887, 6, 12, 24, 1265, 7415, 3, 3955, 22, 17