There are more than 300 million letters in Hangle:   
 Basically letters are composed of 14 consonants and 11 vowels.
 First, the consonant part has 18 simple consonants, including newly addded ones.  Also the simple consonants are combined together, resulting into 324 compound consonants, including fortis. In total: 342 consonants
 Next, in case of vowels, there is a deep round vowel, 'Arae o' and there are Horizontal Vowels & Vertical Vowels; Based on H*V vowels, there are 10 basic vowels(H(5)/V(5)) with 1 or 2 bar-added. Also there are dual vowels with 1 or 2 dot-added. There are umlaut vowels & duple vowels. Addingly, there are <botm vowels>: bar dual vowels, h._i_dual vowels, h. i_triple vowels and quad vowels. Thus, there are 47 horizonal vowels & 54 vertical vowels and in total 102 individual vowels. Also there are 2538 H*V compound vowels such as horizontal & vertical; H*V with bars, H*V with dots, H*V with umlauts, H*V with duple vowels and quad vowels. In total: 2639 Vowels
 Letters are formed with Top consonants and Mid vowels(TM) or Top consonants, Mid vowels and Bottom consonants(TMB). The total num of letters in Hangle will be 309,570,534, which is so numerous that Hangle is called 'a preterhuman language'.