TASK 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.
PROBLEM: ['5867', '8923', '8873', '8155', '5663', 'l', '4411', '9429', 'v', '7155', 'h', 'S', 'g', 'Q', 'N', 'z', 'S', 'h', '6753', 'o', '525', 'Y', 'n', '2855', '8433', '2125', 'n', 'r', 'X', '4863']

SOLUTION: 5867, 8923, 8873, 8155, 5663, 12, 4411, 9429, 22, 7155, 8, 19, 7, 17, 14, 26, 19, 8, 6753, 15, 525, 25, 14, 2855, 8433, 2125, 14, 18, 24, 4863

PROBLEM: ['o', '9845', '1599', '7901', '4987', '17', '2053', 'm', 'l', '1923', '9157', '817', '5361', '655', '2393', '8321', 's', '8605', 'l']

SOLUTION: 15, 9845, 1599, 7901, 4987, 17, 2053, 13, 12, 1923, 9157, 817, 5361, 655, 2393, 8321, 19, 8605, 12

PROBLEM: ['w', '9907', 'I', 'k', '2033', 'M', '2451', '7747', '3341', '87', 'j', '4017', '3177', 't', 'o', 's', '5761', 'u']

SOLUTION:
23, 9907, 9, 11, 2033, 13, 2451, 7747, 3341, 87, 10, 4017, 3177, 20, 15, 19, 5761, 21