RussianIn 
East Slavic languages, the ending 
-ovich, 
-yevich, 
-yich is used to form patronymics for men. For example, in 
Russian, a man named Ivan with a father named Nikolay would be known as Ivan Nikolayevich or 'Ivan, son of Nikolay' (
Nikolayevich being a patronymic). For women, the ending is 
-yevna, 
-ovna or 
-ichna. For masculine names ending in a vowel, such as Ilya or Foma, when they are used as a base for patronymic, the corresponding endings are 
-ich (for men) and 
-inichna (for women).
In Russia, the patronymic is an official part of the name, used in all official documents, and when addressing somebody both formally and among friends. A Russian will rarely formally address a person named Mikhail simply as 'Mikhail', but rather as 'Mikhail' followed by his patronymic (i.e. 'Mikhail Nikolayevich' or 'Mikhail Sergeyevich' etc.).[
citation needed] However, on informal occasions when a person is called by a 
diminutive (such as Misha for Mikhail resp. Nastya for Anastasia), the patronymic is rarely used. In 
colloquial, informal speech, it is also possible to contract the ending of a patronymic: thus Nikolayevich becomes Nikolaich, and Stepan Ivanovich becomes Stepan Ivanych or simply Ivanych as the 
given name may be omitted altogether. In this case the contraction, if possible, is obligatory: Ivan Sergeyevich Sidorov may be called 'Sergeich' or, more rarely, 'Sergeyevich', though such contractions are sometimes avoided as they tend to bring a shade of 
muzhik-style familiarity. Aleksandr Aleksandrovich (Александр Александрович) may be called San Sanych (Сан Саныч) and Pavel Pavlovich (Павел Павлович) may be called Pal Palych (Пал Палыч). A famous example of a contracted female patronymic is 'Mar' Ivanna' (Марьванна), short for 'Maria Ivanovna' (Мария Ивановна), a young female teacher who is a recurring character in 
Vovochka jokes. In contrast to male names, if a woman is called by her patronymic name without a given name, the patronymic is never contracted: 'Ivanovna' but 'Mar' Ivanna'. Male and female patronymic names derived from names ending in 
-slav (Vladislav, Yaroslav) have two possible forms: long, with 
-vovich/
-vovna (Yaroslavovich, Yaroslavovna) and short, with 
-vich, 
-vna (Yaroslavich, Yaroslavna).