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: ['1505', 'k', '2509', 'A', '1587', '1865', 'u', 'o', 'Q', 'M', 'D', 'P', '433', 'h', '1233', '4111', 'I', 'o', '6279', '8217', '7207', '4495', 'm', 't', '4183', '9125', 'A', 'N', '8003', '4967', '4657', '6511', 'z', '6353', '7953', 's', '8829']

1505, 11, 2509, 1, 1587, 1865, 21, 15, 17, 13, 4, 16, 433, 8, 1233, 4111, 9, 15, 6279, 8217, 7207, 4495, 13, 20, 4183, 9125, 1, 14, 8003, 4967, 4657, 6511, 26, 6353, 7953, 19, 8829