Ibyuma bitangiza ibyuma biboneka mu bwoko bwa 304 na 316. Hari ubwoko butandukanye bw'ibikoresho birangira ku byuma bitangiza ibyuma, kandi tubitse bimwe mu bikunzwe cyane hano mu ruganda rwacu.

Irangi rya #8 ry'indorerwamo ni irangi risesuye, rigaragaza neza cyane hamwe n'ibipimo by'ibinyampeke bisesuye.

Irangi rya Polonye riri ku mwanya wa kane rifite ubugari bwa 150-180 mu cyerekezo kimwe.

Irangi rya 2B ni irangi ry'inganda rigaragara neza, rikonje kandi ridafite imiterere y'ibinyampeke.

Dushobora kubona n'abandi, bityo rero niba utabonye icyo ushaka, nyamuneka ntutindiganye kutwoherereza ubutumwa bwa elegitoroniki.