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: ['1143', '5029', 'A', '2297', 'm', 'V', '165', '3437', 'u', 'e', 'J', '5545', 'd', 'j', '1733', 'I', '5139', 'c', '2775', '3417', 'k', '7691', 'V', '7787', '2297', 'p', '6427', 'R', 'g']

1143, 5029, 1, 2297, 13, 22, 165, 3437, 21, 5, 10, 5545, 4, 10, 1733, 9, 5139, 3, 2775, 3417, 11, 7691, 22, 7787, 2297, 16, 6427, 18, 7