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:
3, 14, ['3521', 'Z', 'v', '3603', 'l', 'Z', '4959', '9967', '6437', 'P', '2035', 'u', 'f', 'U', 'k', 'R', '4453']
answer:
Ufu2035P643799674959Zl3603v


question:
10, 20, ['9695', 'I', '5457', 'M', 'V', '7993', 'B', 'b', 'u', 'H', '7805', '3431', '6839', '3687', '8261', 'U', 'a', 'W', '9437', 'q', 'l']
answer:
q9437WaU82613687683934317805H


question:
2, 3, ['1119', '1803', 'r']
answer:

r1803