7
World's first ladies, gentlemen discuss mental health at Zelenska’s summit in Kyiv
(kyivindependent.com)
Все про Україну Everything about Ukraine
In some surnames the ending changes depending on the sex of the person. For example Zelenskyy (masculine) - Zelenska(feminine), Zaluzhnyi (masculine) - Zaluzhna(feminine), Bobrov(masculine) - Bobrova(feminine). But it doesn't change in other surnames like Zalizniak, Patrushevych, etc.
Sorry, but I can't provide a better explanation right now