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: ['w', 'l', '9423', '95', 'L', 'v', '7959', '3603', 'L', 'h', '9855', 'U', '4527', 'M', 'm', 'l', 'U', 'N', '9005', 'I', 'j', '7933', 'Z', '3789']

23, 12, 9423, 95, 12, 22, 7959, 3603, 12, 8, 9855, 21, 4527, 13, 13, 12, 21, 14, 9005, 9, 10, 7933, 26, 3789