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.

6, 7, ['355', '4183', '3563', '8547', '4351', '6841', '5451', 'H', '8035', 'x', '3305', '4233', 'k', '2155', '9987', 'v']
15451486

6, 11, ['B', 'j', '911', 'A', '7195', 'm', '7177', 'X', '2015', 't', 'P', 'x', 'F']
Pt5102X7717m

4, 23, ['P', 'H', 'g', '1239', '4947', '5269', '7053', 'E', '5049', 'W', 'f', '8825', '3855', 'n', 'r', 'U', '5765', '8507', 'm', 'p', '2357', '7983', '1189', 'F', '2535', '6441', 'h']

981138977532pm70585675Urn55835288fW9405E3507962574949321