eightotto
eighteendiciotto
elevenundici
fifteenquindici
fivecinque
fourquattro
fourteenquattordici
ninenove
nineteendiciannove
oneuno
sevensette
seventeendiciassette
sixsei
sixteensedici
tendieci
thirteentredici
threetre
twelvedodici
twentyventi
twodue
zerozero