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:
7, 11, ['2019', 'j', 'B', '1079', '2647', 'I', 'e', '6891', '353', '6495', 'F', '8823', 'U', 'b', '8185', '8305', '2217', '8373', '1951', 'L', '9655', '5247', '8033', 'b']
answer:
F64953536891e


question:
1, 2, ['1437', 'u']
answer:
u1437


question:
11, 15, ['7555', '71', 'f', '6581', '8541', '2853', '9623', '5459', 'i', '5973', '8259', 'R', '3839', '6569', 'I', '6489', 'M', '9613', 'L']
answer:

I65693839R8259