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: 10, 14, ['8551', '9605', '5785', '15', 'd', '3305', '6013', 's', '1819', '187', 'F', 'S', 'B', 't', 'G', 't', 'O', '6225', '9717', '1983', 'x']

tBSF187