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: ['6255', 'X', '1675', '6301', '4749', 'H', 'e', '8133', '5963', '3423', '6783', '6159', 'q', '1153', '1575', 'X', 'd', '9307', 'x', '1105', 'N', 'H', 'f', 'F', '5513', '4477', 'H', 'a', 'f', '8513', 'V', '5829', 'Z', 'L', 'j', 'j', 't']

6255, 24, 1675, 6301, 4749, 8, 5, 8133, 5963, 3423, 6783, 6159, 17, 1153, 1575, 24, 4, 9307, 24, 1105, 14, 8, 6, 6, 5513, 4477, 8, 1, 6, 8513, 22, 5829, 26, 12, 10, 10, 20