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', 'R', 'i', '5837', '9557', '4281', '677', 'J', 'h', '1305', 'i', 'H', '8027', '7357', 'w', 'E', '7875', '3141', 't', '8103', '5501', 'M', '601', 'y', 'Q', 'q', '8171', '4295', 'Q', 'I', 'V', '6807', 's', 'g', '1159', 'q', '5881', 'u', 'r', 'C']

3, 18, 9, 5837, 9557, 4281, 677, 10, 8, 1305, 9, 8, 8027, 7357, 23, 5, 7875, 3141, 20, 8103, 5501, 13, 601, 25, 17, 17, 8171, 4295, 17, 9, 22, 6807, 19, 7, 1159, 17, 5881, 21, 18, 3