Schreibe die fehlende Zahl als Wort in das Feld!

nine	[?]	eleven
fourteen	[?]	sixteen
ten	[?]	twelve
eighteen	[?]	twenty
thirteen	[?]	fifteen
seventeen	[?]	nineteen
seven	[?]	nine
fifteen	[?]	seventeen
eleven	[?]	thirteen
nineteen	[?]	twenty-one
twelve	[?]	fourteen