One charge related to an indecent assault and on two occasions he induced her to perform an indecent act on him.
The victims were aged between 6 and 16.
In sentencing last Friday, Justice Woodhouse referred to the victim impact statements provided by two of the victims.
Both spoke of how Liaki had stolen their childhoods and their innocence.
"He took something away from me that I'll never get back," said one.
They also spoke of feelings of guilt and shame.
"At times I feel that somehow I deserved it, or I instigated it," one said. "I have no feelings of self-worth."
One victim said the abuse caused her to live on the streets, Justice Woodhouse said, noting that was not totally attributable to Liaki's actions.
"But the impact of what you did will be with her for the rest of her life," he said.
Justice Woodhouse said Liaki continued to deny all of the offences. "In fact you express indignation on the basis that you have been wrongfully imprisoned."
Liaki's lawyer, Gene Tomlinson, submitted Liaki should receive a reduced sentence due to his age and "life otherwise well-lived".
That was rejected by the judge, who said the offending against the girls had "blighted their entire lives".
