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', 't', '7099', '7841', 'l', 'L', '1751', 'X', 'Y', '2141', 'K', '1659', 'z', '2941', '3277', '4863', 'V', '2895', '8301', '1115', '7557', '4365', '6095', 'H', '4921', 'F', '8725', 'W', '8831', 'F', '2571', 's', '49', 'T']

20, 20, 7099, 7841, 12, 12, 1751, 24, 25, 2141, 11, 1659, 26, 2941, 3277, 4863, 22, 2895, 8301, 1115, 7557, 4365, 6095, 8, 4921, 6, 8725, 23, 8831, 6, 2571, 19, 49, 20