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.

['y', '9573', 'j', '6697', '4179', '8985', '8999', 'R', '2585', 'h', 'p', '9407', '9575', '2639', '7655', '4683', 'Y']
25, 9573, 10, 6697, 4179, 8985, 8999, 18, 2585, 8, 16, 9407, 9575, 2639, 7655, 4683, 25

['4511', '3187', 'A', '4469', '7071', 'd', '3401', '4495', 'D', 'O', '1637', 'X', '4547', '4637', 'S', 'D', '4555', '7091', 'N', '1603', 'n', 'O', '429', '6795', 'm', '8921', '5357', '101', '7671', '7121', '2667']
4511, 3187, 1, 4469, 7071, 4, 3401, 4495, 4, 15, 1637, 24, 4547, 4637, 19, 4, 4555, 7091, 14, 1603, 14, 15, 429, 6795, 13, 8921, 5357, 101, 7671, 7121, 2667

['Q', '5755', 'T', '8841', '1675', 'b', 's', '6861', 'v', '3147', 'O', 'G', 'p', 'i', '6877', 'v', 'P', 'u', '4357', '4171', 'y', 'Z', 's', '6635', 'F', '8927', '6837', '4827', '2235', 'v', '2963', '1975', 'G', '7075', '8185', 'P', '8033', 'U']

17, 5755, 20, 8841, 1675, 2, 19, 6861, 22, 3147, 15, 7, 16, 9, 6877, 22, 16, 21, 4357, 4171, 25, 26, 19, 6635, 6, 8927, 6837, 4827, 2235, 22, 2963, 1975, 7, 7075, 8185, 16, 8033, 21