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 concatenate all elements of A from the ith element to the jth element, and print 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.
question:
9, 19, ['2139', '6849', 'b', '9459', 'v', 'h', 'i', '7977', 'q', 'Z', '7577', 'P', '9971', 'c', '567', 'J', '693', 'N', 'r']
answer:
qZ7577P9971c567J693Nr


question:
6, 7, ['9747', '2771', '8633', '4251', 'v', 'r', '6949', 'm', 'r', 'H']
answer:
r6949


question:
9, 23, ['9495', 'W', 'C', '9183', '2963', 'b', 't', 'E', 'P', 'd', '6103', '1009', '953', '2041', '575', 'D', '2883', '6483', 'K', 'P', '4707', '7469', '7175', '2211']
answer:

Pd610310099532041575D28836483KP470774697175