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: ['2607', 'v', 'l', '6753', '1087', '7145', '6313', 'F', '5755', '7763', '3677', 'p', 'N', '1939', '8983', 'f', '4271', 'K', 'Z', '3379', '2705', 't', 'e', 'E', 'S', '5507', '4603', '773', '89', 's', '6385', 'i', 'n', 'o', 'v', '2665', 'm', 'L', '9343']

2607, 22, 12, 6753, 1087, 7145, 6313, 6, 5755, 7763, 3677, 16, 14, 1939, 8983, 6, 4271, 11, 26, 3379, 2705, 20, 5, 5, 19, 5507, 4603, 773, 89, 19, 6385, 9, 14, 15, 22, 2665, 13, 12, 9343