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:
10, 14, ['8619', '1037', '6899', '8381', 's', '6757', 'a', '7261', '951', '3047', 'r', 'W', 'O', '31', '2943', '2351', '7637', '8501', 'K', '9131', '599', 'G', 'k', 'a', '8299', 'S', 'G']
answer:
13OWr7403


question:
2, 6, ['415', '3603', 'l', 'C', '9471', 'z', '4087', 'Y', 's']
answer:
z1749Cl3063


question:
5, 17, ['211', 'q', 'j', '9393', 't', 'q', 'K', '3073', 'w', 'u', 'X', '7911', 'e', '7635', 'd', 'C', 'F', 'I', '7507', 'g', 'G', '8217', '9055', '9403', 'D', '3587']
answer:

FCd5367e1197Xuw3703Kqt