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.

[Q]: 1, 7, ['P', 'h', '1443', 'b', 'K', '2641', '3831']
[A]: 13831462Kb3441hP


[Q]: 4, 9, ['d', '1057', '5737', '6925', '6365', 'y', 'w', '6535', 'P', 'F']
[A]: P5356wy56365296


[Q]: 1, 15, ['3953', '613', 'M', '9629', '8949', '8679', 'U', '4393', '3693', '575', 'k', '5327', '6853', 'X', '13', 'd', '3411', '9493', '6621', 'y', 'J', 'm', 'O', '4083', 'Q']
[A]:
31X35867235k57539633934U976894989269M3163593