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.

['o', '8137', 'V', 'q', '2543']
15, 8137, 22, 17, 2543

['7149', '3915', 'k', 'Y', 'z', 'P', '775', 'v', 'U', '233', 'm', '2939', 'O', '6787', '7717', 'U', '8531', '5071', 'j', '7839', 'S', 'W', 'K', '3689', '8907', '7721', '9099', 'U', 'U', '53', '4025', 'J', '7179', '7587']
7149, 3915, 11, 25, 26, 16, 775, 22, 21, 233, 13, 2939, 15, 6787, 7717, 21, 8531, 5071, 10, 7839, 19, 23, 11, 3689, 8907, 7721, 9099, 21, 21, 53, 4025, 10, 7179, 7587

['6377', '5683', 'I', 'z', '3349', 't', '5065', 'c', 'A', 'w', 'Y', 'M', '4647', 'v', '4821', '4495', 'a', '9937', '4835', 'E', 'F', 'b', 'g']

6377, 5683, 9, 26, 3349, 20, 5065, 3, 1, 23, 25, 13, 4647, 22, 4821, 4495, 1, 9937, 4835, 5, 6, 2, 7