Definition: In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant 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 concatenate the elements and then reverse the string.
Input: 3, 7, ['9719', '4931', '1123', 'Q', '7463', 'l', '2077', 'E', '7179', '6041', '4055', '9765', '1159', '7065', '7057', 'C', '9531', '611', '5525', '1573', 'a']

2077l7463Q1123