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.

Ex Input:
4, 17, ['q', '6715', '451', '8195', 'i', '9071', 'z', 'R', '5', '1511', 'j', 'r', '5707', '6951', '9165', 'c', '5117']

Ex Output:
5117c916569515707rj15115Rz9071i8195


Ex Input:
5, 18, ['u', '3123', 'g', 'r', 'M', '559', 'F', 'F', '3229', '3207', 'w', 'X', 'U', 'j', 'f', 'p', '7623', '6121', '2279', 'v']

Ex Output:
61217623pfjUXw32073229FF559M


Ex Input:
1, 6, ['W', '5415', 'a', 'd', '7953', '6673']

Ex Output:

66737953da5415W