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: ['A', 'M', 'Y', 'K', '2695', '9895', '7943', '7491', '8953', 'Y', '503', '3121', 'u', 'v', '3759', '2583', 'Y', '27', 'h', 'x', 'L', 'p', 'U', '3991', '205', 'J', 'O', '1623', '269', '507', 'd', 'Z', 'o', 'y']

1, 13, 25, 11, 2695, 9895, 7943, 7491, 8953, 25, 503, 3121, 21, 22, 3759, 2583, 25, 27, 8, 24, 12, 16, 21, 3991, 205, 10, 15, 1623, 269, 507, 4, 26, 15, 25