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:
6, 7, ['S', 'R', 'k', 'b', 'd', '9773', '6751']
answer:
67519773


question:
1, 12, ['H', '7185', 'R', 'N', '489', '6499', 'L', '8809', '7041', '9267', 'o', 'r', '1423', '6103']
answer:
ro926770418809L6499489NR7185H


question:
17, 19, ['399', 'M', '315', '7595', '519', 't', '381', '269', '4153', '4321', '9593', 'u', 'z', 'X', '8691', '311', '8003', '5393', 'a', '767', '3859']
answer:

a53938003