Input (grade 10): On February 11, 2009, the court in Dnepropetrovsk found Igor Suprunyuck and Viktor Sayenko guilty of premeditated murder and sentenced both to life imprisonment. Suprunyuck was found guilty of 21 murders, while Sayenko was found guilty of 18 murders. "
Output (grade 9): They were all found guilty by a court in February 2009, and Suprunyuck and Sayenko were sentenced to life imprisonment.