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: ['3935', '3', '5455', 'R', '9457', 'Z', '6465', '3965', 'l', '8183', '3801', 'g', 'y', '5345', 'P', '5679', '499', '703', 'S', '5359', 'v', '9321', '281', 'j', 'V', 'A', '1917', '2801', '6585', '8831', '4125']

3935, 3, 5455, 18, 9457, 26, 6465, 3965, 12, 8183, 3801, 7, 25, 5345, 16, 5679, 499, 703, 19, 5359, 22, 9321, 281, 10, 22, 1, 1917, 2801, 6585, 8831, 4125