Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
yon fourjlpt5
sen 1,000, thousandjlpt5
roku (num) sixjlpt5
oku (num) 100,000,000, hundred millionjlpt4
十億 juuoku 1,000,000,000, billion (American), (obs) milliard (British)mix