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.

Example Input: 5, 20, ['5377', 'j', 'j', '1767', '2103', '9547', 'I', 'M', '4067', '2571', 'V', 'Z', 'O', '3421', 'V', 'v', '4919', 'X', '307', 'M', '1603']
Example Output: M307X4919vV3421OZV25714067MI95472103

Example Input: 3, 6, ['4031', 'K', 'X', '2743', '453', 'X', '4777', 'T', 'I', '1435', '3873', '3103', '2099', '9651', '2917', '5711', '9881', 'o', 'I', 'p', 'H']
Example Output: X4532743X

Example Input: 4, 16, ['9267', '3393', '6433', 'z', '8809', '6621', '7917', 'H', '4649', '4079', 'd', 'R', '8303', '5633', 'w', 'S', 'U', '3603', '4557']
Example Output:
Sw56338303Rd40794649H791766218809z