Помогите пожалуйста решить 4ое

1/ Mikhails and Marias / Maxims and Olgas
2/ Maxims/ Victors, Sergeys and Olgas
3/ Mikhails and Nikolays/ Victors, Sergeys and Maxims
4/Mikhails/ Nikolays
5/Victors, Sergeys and Olgas/ Nikolays and Marias
6/ Nikolays and Mikhails/ Victors, Sergeys and Maxims
7/Mikhails and Marias/ Sergeys, Olgas and Maxims
8/Nikolays and Mikhails/ Olgas