his/her own

Attested in Viking Language 3.2 ("sína"), Viking Language 4.1 ("sína"), Viking Language 5.2 ("síns"), Viking Language 6.2 ("sína"), Viking Language 6.13, Viking Language 8.2 ("sínum"), Viking Language 9.12 ("síns"), Viking Language 10.2 ("sitt"), Viking Language 11.1 ("síns"), Viking Language 11.11, Viking Language 12.1, Viking Language 13.1, Viking Language 14.2