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: 5, 6, ['7319', 'U', 'Z', '1163', '8123', '4861', '117', '3893', '2489', 'S', '1511']

Answer: 16843218


Question: 5, 6, ['v', 'g', '5867', '9693', 'T', 'd', 'K', 'x']

Answer: dT


Question: 1, 7, ['1477', '3405', 'r', 'c', '3133', '6695', 'k', 'a', 'a', 'X', '2955', 'l', '9437', '8715']

Answer:
k59663313cr50437741