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: ['E', 'T', '4905', 'L', 'n', 'c', 'd', '761', 'f', '2603', '9287', '8659', '7351', '4129', 'P', 'e', 'p', '3597', 'R', '5051', '1181', 'q', 'x', 'L', '9063', '7437', 'v', '351', 'e', '533', '3567', '8267', 'a']

5, 20, 4905, 12, 14, 3, 4, 761, 6, 2603, 9287, 8659, 7351, 4129, 16, 5, 16, 3597, 18, 5051, 1181, 17, 24, 12, 9063, 7437, 22, 351, 5, 533, 3567, 8267, 1