In this task, you are given a list. This list contains many lists of integers. The list is several items written within a []. Your task is to find the maximum number among the members of each inner list. The output should be a list comprised of the maximums with the same order as the internal lists.
[[-129, -121, -62, -70, 31], [92, 63], [-38, 99, -156], [100, 66], [-89, -152, -11, 38], [-106, -69]]