As in English-speaking countries, Czech women traditionally receive their father's surname at birth and take their husband's name when they marry. However, the names are not exactly the same; the endings differ to fit into the Czech language's systems of gender adjectives. For example, the tennis players Cyril Suk and Helena Suková are brother and sister; "Suková" is the feminine form of "Suk". In fact, Czech female surnames are almost always feminine adjectives. There are several ways of forming them, depending on their male counterpart: