#define X "teen",
i;char*a[]={"zero","one","two","three","four","five","six","seven","eight","nine","ten","eleven","twelve","thir"X"four"X"fif"X"six"X"seven"X"eigh"X"nine"X"twenty","thirty","forty","fifty","sixty","seventy","eighty","ninety","one hundred"};main(){for(;i<100;++i)i>20?printf("%s%s%s\n",a[18+i/10],i%10?" ":"",i%10?a[i%10]:""):puts(a[i]);puts(a[28]);}