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: ['861', 'e', 'N', 'N', '8533', '4669', 'S', '4561', '6923', 'r', '3453', 'C', '3529', '7105', '5353', '727', 'R', '5985', 'e', '3767', '359', 'N', '6557', 'S', '6053', '2503', 'y', 'e', '5671', '9537', 'J', '1677', 's', '3603', 'p']

861, 5, 14, 14, 8533, 4669, 19, 4561, 6923, 18, 3453, 3, 3529, 7105, 5353, 727, 18, 5985, 5, 3767, 359, 14, 6557, 19, 6053, 2503, 25, 5, 5671, 9537, 10, 1677, 19, 3603, 16