systurbarn
nafnorðhvorugkynsystur-barn
barn systur e-s
Fallbeygingar
Eintala
Eintala m. greini
Nf.
systurbarn
systurbarnið
Þf.
systurbarn
systurbarnið
Þgf.
systurbarni
systurbarninu
Ef.
systurbarns
systurbarnsins
Fleirtala
Fleirtala m. greini
Nf.
systurbörn
systurbörnin
Þf.
systurbörn
systurbörnin
Þgf.
systurbörnum
systurbörnunum
Ef.
systurbarna
systurbarnanna