instruction:
In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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 reverse first and then concatenate.
question:
1, 3, ['4523', '3909', 'V', '7275', '5721', '6113', 'G', '5319', '3519']
answer:
V90933254


question:
11, 12, ['4217', '7725', '1753', '3049', 'd', '5543', 'z', 'o', '8859', '7469', 'M', '3863', '4729', 'K', 'o', 'b']
answer:
3683M


question:
7, 13, ['847', '8935', '7221', '8773', '9963', 't', '9929', '9905', 'f', '4227', 'K', 'k', '755', '4635', 'v', 'h', '1681', '5919', 'y', '5177']
answer:

557kK7224f50999299