ventuno	ventidue	ventitré
ventiquattro	venticinque	ventisei
ventisette	ventotto	ventinove
trenta	quaranta	cinquanta
sessanta	settanta	ottanta
novanta	cento	la decina
le decine	la ventina

twenty-three	twenty-two	twenty-one
twenty-six	twenty-five	twenty-four
twenty-nine	twenty-eight	twenty-seven
fifty	forty	thirty
eighty	seventy	sixty
the ten	one hundred	ninety
	the twenty (approximate number)	the tens