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: ['T', 'M', 'A', '7255', 'K', '1923', 'o', '8249', 'i', 'F', 'V', 'n', 'r', 'c']

20, 13, 1, 7255, 11, 1923, 15, 8249, 9, 6, 22, 14, 18, 3