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:
4, 17, ['q', '6715', '451', '8195', 'i', '9071', 'z', 'R', '5', '1511', 'j', 'r', '5707', '6951', '9165', 'c', '5117']
answer:
5117c916569515707rj15115Rz9071i8195


question:
10, 18, ['p', '5729', '2319', 'D', 'u', 'C', '5549', 'l', '6565', '2055', 'J', '6501', '9961', 'q', 'T', 'b', 'c', 't', '3407', 'M', '3705', 'h', '4409', '8927', 'J', '3701']
answer:
tcbTq99616501J2055


question:
1, 4, ['4451', '2405', 'm', '2221']
answer:

2221m24054451