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: ['y', '4119', 'g', 'i', '6157', '8415', '5991', 'i', '6807', 'r', '3903', 'b', '9595', '5573', 'f', '4865', '7775', '2807', '5245', '559', 'w', '1151', 'i', '7183', 'x', 'T', '9105', 'G', '3213', 'D', 'a', 'P', 'I', 'g', 'C', '71', '1177', '2377', '1353']

25, 4119, 7, 9, 6157, 8415, 5991, 9, 6807, 18, 3903, 2, 9595, 5573, 6, 4865, 7775, 2807, 5245, 559, 23, 1151, 9, 7183, 24, 20, 9105, 7, 3213, 4, 1, 16, 9, 7, 3, 71, 1177, 2377, 1353