What is shadba roop for shashin in sanskrit?

The shadba roop for shashin in Sanskrit are as follows:

1. Prathama eka vachana: shashii
2. Prathama dvivachana: shashinau
3. Prathama bahuvachana: shashinah
4. Dvitiya eka vachana: shashinam
5. Dvitiya dvivachana: shashinau
6. Dvitiya bahuvachana: shashinah