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: ['h', '5821', 'K', '3365', '2007', 't', 'H', 'W', '9063', '255', '7659', '4387', 'p', 'E', 'E', 'j', 'F', 'B', 'l', 'F', 'c', 'z', 'B', '69', '7271', '1253', '1001', 'Y', 'H', 'g', '895', 'N', 'J', '9551', 's']

8, 5821, 11, 3365, 2007, 20, 8, 23, 9063, 255, 7659, 4387, 16, 5, 5, 10, 6, 2, 12, 6, 3, 26, 2, 69, 7271, 1253, 1001, 25, 8, 7, 895, 14, 10, 9551, 19