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, 4, ['9669', '8783', '8485', 'w', 'U', '4489', '1573', '6015', 'p', '1533', 'X', '3123', 'y', 'X', '4921', 'p', 'K', '9841', '8639', '1953']

Ex Output:
w84858783


Ex Input:
1, 7, ['2513', '259', '655', 'w', '1463', 'X', '151', '5779', 'd', 'V', 'j']

Ex Output:
151X1463w6552592513


Ex Input:
1, 12, ['Y', '8117', '8509', 'O', '1505', '927', '2505', '3117', '6127', 'u', '6721', '4307', 'm']

Ex Output:

43076721u6127311725059271505O85098117Y