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: 7, 16, ['1887', 'K', '4523', '4865', '6217', '6937', '4449', '7671', '2939', 'S', '9051', '3069', 'H', '1097', '6497', 'Y', '8285', 'V', 's', '663', 'n', '9551']

Y64971097H30699051S293976714449