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:
2, 15, ['447', 'F', '3469', 'B', 'q', '6273', 'G', '2973', '5109', 'A', 'O', '2849', '4469', '1995', 'm', '5735', '2011', '3255', '2653', 'p', '3383']

Ex Output:
m199544692849OA51092973G6273qB3469F


Ex Input:
3, 9, ['6141', 't', 'I', '9239', '747', 'k', 'o', '4329', 'b', 'a', '6943', 'n', '8749', 'u', '9367', 'q']

Ex Output:
b4329ok7479239I


Ex Input:
9, 12, ['479', 'b', '9573', 'e', 's', '8247', 'A', 'x', 'D', '1299', '3053', '8455', 'e', '929', 'I', 'P', '9299', '9041', '2595', '2503', '8603']

Ex Output:

845530531299D