The five victims of a Peterborough sex gang are girls aged between 12 and 14.
Two of the victims are of Czech/Slovak origin while the other three are English. The case came to light when a girl, known as victim A, was taken into care and began to tell her social worker what had been happening.
The jury was told that victim A, who has learning difficulties, considered Zdeno Mirga as the "boss".
Prosecutor Angela Rafferty told the trial Mirga had sex with her in the toilets in a park, and she was also abused on a park table.
Mirga had encouraged her "often very forcefully" to have sex with other boys and men, sometimes with the use of threats and violence, Ms Rafferty said.
The victim told police that Mirga "shared" her because he wanted money to buy cannabis and vodka, the court heard.
Judge John Bevan QC adjourned for sentencing on February 20 for all five defendants.
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