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: ['557', 'v', '7161', 'R', '7823', 'H', '5893', '5743', 'o', '5955', '8891', '4701', 'w', '5993', '5033', 'I', '2835', '1601', 'x', '5071', 'o', 'n', 'B', '8093', 'U', 'R', 'H', 'd', '7417', '5037', '9735', 'd', 'f', '3195']

557, 22, 7161, 18, 7823, 8, 5893, 5743, 15, 5955, 8891, 4701, 23, 5993, 5033, 9, 2835, 1601, 24, 5071, 15, 14, 2, 8093, 21, 18, 8, 4, 7417, 5037, 9735, 4, 6, 3195