vatnstankur
nafnorðkarlkynvatns-tankur
tankur undir vatn
Fallbeygingar
Eintala
Eintala m. greini
Nf.
vatnstankur
vatnstankurinn
Þf.
vatnstank
vatnstankinn
Þgf.
vatnstanki
vatnstankinumvatnstanknum
Ef.
vatnstanks
vatnstanksins
Fleirtala
Fleirtala m. greini
Nf.
vatnstankar
vatnstankarnir
Þf.
vatnstanka
vatnstankana
Þgf.
vatnstönkum
vatnstönkunum
Ef.
vatnstanka
vatnstankanna