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:
1, 2, ['M', 'G', '8763', '6617', 's', 't']
answer:
MG


question:
1, 2, ['i', '8137', '603', 'R', '8825', 'g']
answer:
i8137


question:
1, 11, ['M', '2431', 'z', 'Z', 'C', 'B', 'B', 'w', 'n', 'M', 'K', 'G']
answer:

M2431zZCBBwnMK