The sexual offences committed against the teenagers have been described as "perverted in the extreme", with the abuse sometimes going on for days at a time.
The men used the girls, it's alleged, for their own gratification, but also took them to other places - normally hotels and guest houses - and to empty houses where they were abused by other men.
This abuse often took place with groups of men who paid money to the defendants for sex.
None of the money ever reached the victims.
The court was told that the men were "much older" than the girls and would have known that their victims were under-age. Therefore, the prosecution says that their actions were "intentional and persistent."
More top news
Taliesin Myrddin Namkai Meche, 23, was stabbed along with Rick Best, 53, when they tried to stop a racist attack on two Muslim girls.
The shadow home secretary, 63, said she worked in the Home Office for nearly three years when she was a trainee.
Home Secretary Amber Rudd has attacked Labour's capabilities to effectively deal with any future terrorism threats facing the UK.