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.
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Question: 7, 27, ['9785', 'O', '1451', '263', 'V', '9045', 'n', 'K', 'B', '8131', '6137', '437', 'v', 'd', '2787', '3483', '3141', '2151', 'r', 'q', '2981', '4301', '1947', '7631', '8755', 'F', 'W', 'L', 'O']

Answer: WF55781367749110341892qr1512141338437872dv73473161318BKn


Question: 9, 13, ['4635', '9581', '9269', 'A', '4887', 'V', '1767', '9267', 'T', '1895', '4941', 'q', '5979', '501']

Answer: 9795q14945981T


Question: 7, 28, ['N', '4679', '6605', 'X', 'q', '3147', '2627', '4015', '9819', '7969', 'K', 'a', 'N', 'M', '945', '4817', 'e', 'U', 'Z', 'y', 'u', '4053', 'f', 'r', 'A', '3573', '2187', 'W', '6239']

Answer:
W78123753Arf3504uyZUe7184549MNaK9697918951047262