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: ['Z', 'g', '741', 'D', '6455', 'Q', 'P', '1639', '6721', '2763', '791', '4885', 'Y', '9499', '797', '4445', 'S', 'y', 'W', 'Y', '9127', '4419', '227', '2819', '3717', 'g', '8087', 'G', '5709', 'R', 'j', 'z', 'o', '7051']

26, 7, 741, 4, 6455, 17, 16, 1639, 6721, 2763, 791, 4885, 25, 9499, 797, 4445, 19, 25, 23, 25, 9127, 4419, 227, 2819, 3717, 7, 8087, 7, 5709, 18, 10, 26, 15, 7051