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.
[[-50, 23, 56, 62, -65, -109], [-138, -126, -114, 15, 45, 33], [87, -152], [-147, -143, -156, -114, -146], [-53, -148, 44, -171, -154, -12, -12]]