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: ['1827', '7155', 'n', '7967', '2503', '4067', 'F', 'Q', '7609', '6541', 'n', '9943', 'C', '9945', '4819', 'y', '3059', 'H', 'Z', '4135', '969', '6377', 'n', 'j', 'N', '2565', 'A', '6337', '6459', 't', '6177', 'j', '307', '977', 'z']

1827, 7155, 14, 7967, 2503, 4067, 6, 17, 7609, 6541, 14, 9943, 3, 9945, 4819, 25, 3059, 8, 26, 4135, 969, 6377, 14, 10, 14, 2565, 1, 6337, 6459, 20, 6177, 10, 307, 977, 26