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: ['111', 'o', 'J', 'm', 'V', '1909', '4243', '9907', 'N', '55', 'Y', 'Q', 'I', '7431', 's', 't', '9183', '2283', '4293', 'h', '6291', '2555', 'j', '1245']

111, 15, 10, 13, 22, 1909, 4243, 9907, 14, 55, 25, 17, 9, 7431, 19, 20, 9183, 2283, 4293, 8, 6291, 2555, 10, 1245