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: ['9249', 'f', '9895', 'p', '9081', '2923', 'h', 'd', '3471', 'b', '6411', 't', '4873', 'v', 'A', '9291', '5601', '623', 'z', '9693', '7779', 'x', '3807', '9095', 'm', 't', '4765', '6219', 'L', '721', '4325', '6367', 'N', 'u', '3061', '3637']

9249, 6, 9895, 16, 9081, 2923, 8, 4, 3471, 2, 6411, 20, 4873, 22, 1, 9291, 5601, 623, 26, 9693, 7779, 24, 3807, 9095, 13, 20, 4765, 6219, 12, 721, 4325, 6367, 14, 21, 3061, 3637