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: ['Z', '6937', 'r', '6225', 'V', '8329', 'n', 'U', '6061', 't', '9113', 'B', '3799', 'j', '9623', 'z', '6523', 'u', 'p', '7121', '5311', 'h', 'f', 'g', '901', '4369', 'g']

26, 6937, 18, 6225, 22, 8329, 14, 21, 6061, 20, 9113, 2, 3799, 10, 9623, 26, 6523, 21, 16, 7121, 5311, 8, 6, 7, 901, 4369, 7