Oleg Sheremet(nice), Oleg Sheremet(interesting), Nataliya Kolisnichenko(nice), Nataliya Kolisnichenko(interesting), Kyrylo Gorshkov(nice), Kyrylo Gorshkov(interesting), Kyrylo Gorshkov(important), Olga Malygina(important), Olga Malygina(nice), Olga Malygina(interesting), Family Kuzhel(interesting), Andrey Mis\'kov(important), Kostiantyn Pylypiuk(nice), Kostiantyn Pylypiuk(interesting), Oleksandr Kovalchuk(interesting), Vasil Bodnar(nice), Dmytro Petrychenko(nice), Dmytro Petrychenko(interesting), Roman Yaremchuk(nice), Roman Yaremchuk(important)