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: ['9973', 'J', 'x', 'm', 'Q', '2171', 'X', '4089', 's', '3655', '679', 'X', 'Z', 'J', '4751', '533', 'q', 'i', 'V', 'M', '917', '2581', '5181', '5071', '8139', 'v', 'X', '707', '411', '1531', '3307', '4813', '443', 'V']

9973, 10, 24, 13, 17, 2171, 24, 4089, 19, 3655, 679, 24, 26, 10, 4751, 533, 17, 9, 22, 13, 917, 2581, 5181, 5071, 8139, 22, 24, 707, 411, 1531, 3307, 4813, 443, 22