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: ['4359', '6545', '7337', '5589', '9335', '3087', '7249', '9569', '2873', 'F', 'X', '9669', '3769', '2115', '8541', '4823', 'I', 'c', '9547']

SOLUTION: 4359, 6545, 7337, 5589, 9335, 3087, 7249, 9569, 2873, 6, 24, 9669, 3769, 2115, 8541, 4823, 9, 3, 9547

PROBLEM: ['7139', '9377', '2097', '5467', '1281', 'J', 'u', 'V', '5893', '5083', 'I', 'U', 'D', 't', '3361', 'u', '8185', '3395', 'A', 'g', 'g', '9167', 'm']

SOLUTION: 7139, 9377, 2097, 5467, 1281, 10, 21, 22, 5893, 5083, 9, 21, 4, 20, 3361, 21, 8185, 3395, 1, 7, 7, 9167, 13

PROBLEM: ['2679', '3731', '8845']

SOLUTION:
2679, 3731, 8845