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: ['c', 'J', 'H', '3545', 'r', 'j', '5441', 't', 'T', '543', 't', 'W', '7993', 'q', '439', '4075', '3005', 'F', '2187', 'l', 'x', '3449', 'r', 'Q', 't', '5633', '5663', 'R', '869', '9063', '3077', 'P', 'Q', '5179', '7387']

3, 10, 8, 3545, 18, 10, 5441, 20, 20, 543, 20, 23, 7993, 17, 439, 4075, 3005, 6, 2187, 12, 24, 3449, 18, 17, 20, 5633, 5663, 18, 869, 9063, 3077, 16, 17, 5179, 7387