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.

['x', '9267', '297', 'u', 'B', 'N', 'A']
24, 9267, 297, 21, 2, 14, 1

['A', '5559', '2573', 'F', '8233', 'A', 'F', 'u']
1, 5559, 2573, 6, 8233, 1, 6, 21

['z', '9731', 'j', '7153', '4883', '3123', '7483', '1517', 'A', '7657', '9271', '7', '5085']

26, 9731, 10, 7153, 4883, 3123, 7483, 1517, 1, 7657, 9271, 7, 5085