Sergo Travelian(nice), Andrey Mis\'kov(nice), Dmytro Petrychenko(nice), Roman Yaremchuk(nice), Roman Yaremchuk(interesting), Nataliya Kolisnichenko(nice), Natalia Honcharyk(nice), Alex Komarovskiy(nice), Alex Komarovskiy(interesting), Vsevolod Olenich(nice), Andrey Bazdyrev(nice), Vladimir Popenko(nice), Family Kuzhel(nice), Kostiantyn Pylypiuk(nice), Kostiantyn Pylypiuk(interesting), Alex Komarovskiy(important), Vasil Bodnar(nice), Yakov Stepanov(nice), Oleksandr Kovalchuk(nice), Vitalii Kazannyk(nice), Ihor Vietokhin(interesting), Ihor Vietokhin(nice)