learn numbers : kong 0, il 1, shibil 11, ishibil 21, i 2, shibi 12,ishibi 22,sam 3,shipsam 13,ishipsam 23,sa 4,shipsa 14,ishipsa 24,o 5,shibo 15,yuk 6,shimnyuk 16,ch'il 7,shipch'il 17,p'al 8,shipp'al 18,ku 9,shibku 19,ishipku 29,ship 10,iship 20,samship 30,saship 40,kuship 90,paek 100,ch'on 1000,man 10,000