Dmytro Petrychenko(nice), Dmytro Petrychenko(interesting), Vasil Bodnar(interesting), Yevgen Chernolyev(nice), Nataliya Kolisnichenko(nice), Nataliya Kolisnichenko(interesting), Kostiantyn Pylypiuk(nice), Andrey Mis\'kov(interesting), Vasil Bodnar(nice), Vitalii Kazannyk(nice), Vitalii Kazannyk(important), Andrey Bazdyrev(nice), Family Kuzhel(nice), Vsevolod Olenich(nice), Vsevolod Olenich(interesting), Alexander Cherinko(interesting), Oleksandr Kovalchuk(interesting), Oleh Snitsar(nice)