In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting string. 'i' and 'j' will be non-negative, and will always have a value less than the length of A. 'i' will always be less than 'j'. Perform the operations in order, i.e., do not reverse first and then concatenate.
15, 19, ['c', '8137', 'V', 's', '7977', 'D', '3655', 'Y', 'd', '6269', 'y', '5851', 'K', '6307', '5921', '223', '8521', '2379', '3015', 'B', '8493', 'Y', 't', '7527', 'K', 'T']