We counted to 10 in Greek, now let's learn some bigger numbers!
11 ένδεκα (éndeka) - sounds like AY-n-day-kah

12 δώδεκα (dódeka) - sounds like DOH-day-kah

13 δεκατρία (dekatría) - sounds like day-kah-t-DEE-ah

14 δεκατέσσερα (dekatéssera) - sounds like day-kah-TAY-say-dah

15 δεκαπέντε (dekapénte) - sounds like day-kah-PAY-n-tay


(from: wikipedia - center for the greek language)
ASL: eleven, twelve, thirteen, fourteen, fifteen
Italian: undici, dodici, tredici, quattordici, quindici
German: elf, zwölf, dreizehn, vierzehn, fünfzehn
Spanish: once, doce, trese, catorce, quince
French: onze, douze, treize, quatorze, quinze