For the cardinal numerals higher than 20 between the multiples of 10 ( i . e ., 21-29, 31-39, 41-49, etc . ), there are two types of formations.
12.
The " n " disappeared before the " th " in the West Germanic dialect area that gave rise to English, and eventually yielded the Old English form " tothe ", " tenth, " still not too different from the cardinal numeral [ " ten " ] ".
13.
The cardinal numerals from 21 to 99 ( apart from the tens ) are constructed in a regular way, by adding "-�n-" ( and ) and the name of the appropriate multiple of ten to the name of the units position . ( As in German, the last written digit is actually pronounced first ):
14.
The Georgian cardinal numerals up to ten are primitives, as are the words for 20 and 100, and also " million ", " billion ", etc . ( The word for 1000, though, is not a primitive . ) Other cardinal numbers are formed from these primitives via a mixture of decimal ( base-10 ) and vigesimal ( base-20 ) structural principles.