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, 6, ['U', '5099', '1125', 'U', '1693', '7717', 'P', '7679', 'E', '7747', 'D', 'Z', 'E', '4473']
answer:
77171693U


question:
1, 12, ['6225', 'S', 'E', '3433', 'E', '2617', 'k', 'k', '3927', 'V', 'R', '9569']
answer:
9569RV3927kk2617E3433ES6225


question:
2, 6, ['6293', '6321', 'D', 'Z', 'f', 'Q', '4717']
answer:

QfZD6321