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: 3, 10, ['g', '5155', 'p', '6627', 'W', 'q', '2851', 'm', 's', '7781', 'u', '9739']

Answer: 1877sm1582qW7266p


Question: 5, 22, ['N', 'h', '3071', 'C', '9811', 'B', '6247', 'l', '9637', '3467', '4895', '1491', '8011', 'k', '3983', 'W', '7901', '7111', '4927', '4679', 'P', 'L', '3925', '5991', 'C', 'z', 'q', '2369', '4401']

Answer: LP9764729411171097W3893k11081941598476437369l7426B1189


Question: 4, 4, ['m', '2575', 'w', 'X']

Answer:
X