1-12: Masculine Gender with -u at the end

1-12: U-kàrantapulliïgo - nattu
1-12: Masculine Gender with -u at the end - nattu

U-kàrantapulliïgo nattu-saddo vuccate
The Masculine Gender with -u at the end
is illustrated with the declinable word nattu This form is given as nattar in the modern grammers, but the Pàëi grammarians normally give it as nattu. Nattu is unusual in that it follows the agent noun declesion like Satthu above, and is unlike the normal relationship nouns, like pitu, which has short vowel in this position.⁰¹

singular:	plural:	case:
-à	-àro	nomimative - pañhamà
-à -a	-àro	vocative - (pañhamà)
-àraü	-àre -àro	accusative - dutiyà
-àrà	-àrehi -àrebhi	instrumental - tatiyà
-u -uno -ussa	-àrànaü -ànaü	dative - catutthã
-àrà	-àrehi -àrebhi	ablative - paÿcamã
-u -uno -ussa	-àrànaü -ànaü	genitive - chaññhã
-i	-àresu	locative - sattamã

Visàkhàya Migàramàtuyà nattà kàlakatà hoti Ud. 8-8.⁰² (nom. sing.)
Then at that time Migàra's mother Visàkhà's grandchild had died

Nattàro suõisà putto Ràjà Devã ca ekato Jà. 547; VI, p. 587.⁰³ (nom. plur.)
The grandsons, daugthers-in-law, children, King and Queen were all on one side

Bho nattà! Tvam-pi sippaü uggaõhàhi (voc. sing.)
Bho natta! This is an analogical form, along the lines of vadhå (nom.) > vadhu (voc.).⁰⁴ Tvam-pi sippaü uggaõhàhi
Good grandchild! You must learn a craft

Bho nattàro! Tumhe sippàni uggaõhàtha (voc. plur.)
Good grandchildren! You must learn (some) crafts

Bhikkhå ... Visàkhàya Migàramàtuyà nattàraü etad-avocuü (acc. sing.)
The monks ... said this to Migàra's mother Visàkhà's grandchild

Iccheyyàsi tvaü ... putte ca nattàre ca? (acc. plur.)
Iccheyyàsi tvaü ... putte ca nattàro ca? Ud. 8-8.⁰⁵
Would you like ... children and grandchildren?

Nattàrà rukkho pupphàni avacãyate (agent. inst. sing.)
The tree flowers are gathered by the grandchild

Nattàrehi rukkho pupphàni avacito (agent. inst. plur.)
The tree flowers were gathered by the grandchildren

Nattàrà pitàmaho sukhã jàto (inst. sing.)
Because of the grandchild the grandfather became happy

Alaü me ... puttehi ca nattàrehi cà Ud. 8-8.⁰⁶ (inst. plur.)
I have had enough ... with children and grandchildren

Nattu khettavatthuü dadàti pitàmaho (dat. sing.)
Nattuno khettavatthuü dadàti pitàmaho
Nattussa Nattussa here and below is analogical from the -a declension.⁰⁷ khettavatthuü dadàti pitàmaho
The grandfather gave grounds and fields to the grandchild

Nattàrànaü khettavatthuü dadanti pitàmahà (dat. plur.)
The grandfathers gave grounds and fields to the grandchildren

Nattàrà pitàmaho apeto hoti (abl. sing.)
The grandfather went away from the grandchild

Nattàrehi pitàmaho apeto hoti (abl. plur.)
The grandfather went away from the grandchildren

Nattu vatthàbharaõaü pana hoti (gen. sing.)
Nattuno vatthàbharaõaü pana hoti
Nattussa vatthàbharaõaü pana hoti
This is the grandchild's cloth and an ornament

Nattàrànaü kho pana vatthàbharaõàni honti (gen. plur.)
These are the grandchildrens' clothes and an ornaments

Nattari yo koci pitàmaho nappasãdati (loc. sing.)
There is some grandfather who has no confidence in (their) grandchild

Nattàresu ye keci pitàmahà nappasãdanti (loc. plur.)
There are some grandfathers who have no confidence in (their) grandchildren