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: ['5977', 'n', '2353', '5905', '2313', '2085', '7839', '8997']

5977, 14, 2353, 5905, 2313, 2085, 7839, 8997