instruction:
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.
question:
10, 20, ['7655', 'T', 'i', 'R', 'O', 'y', '2217', '7443', '2467', 'k', '5471', 'e', 'z', 'x', 't', '4181', 'd', 'r', '2879', 'j', '8981', 'y', 'T', 'Y', 'R']
answer:
j2879rd4181txze5471k


question:
1, 4, ['O', 't', '8177', 'D']
answer:
D8177tO


question:
6, 17, ['2621', '7559', '121', 'p', 'K', '5945', '3269', '3563', '9925', '9469', 'E', 't', 'v', 'e', '1839', '4509', 'T', 'G', 'e', 'g', 'I', '7381', 'g', 'E', '4403', 'q']
answer:

T45091839evtE94699925356332695945