Rule reminder

Quick recognition: uno=1, due=2, tre=3, quattro=4, cinque=5, sei=6, sette=7, otto=8, nove=9, dieci=10, undici=11, dodici=12, tredici=13, quattordici=14, quindici=15, sedici=16, diciassette=17, diciotto=18, diciannove=19, venti=20.