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:
2, 4, ['9669', '8783', '8485', 'w', 'U', '4489', '1573', '6015', 'p', '1533', 'X', '3123', 'y', 'X', '4921', 'p', 'K', '9841', '8639', '1953']
answer:
w84858783


question:
2, 3, ['T', 'K', 't', '7165', '2285', 'm']
answer:
tK


question:
3, 7, ['8765', '1285', 'U', '6459', 'y', 'L', 'q', '7933', '8523']
answer:

qLy6459U