Vocabulary consisting only from characters you are able to read
億
おく
(num) 100,000,000, hundred millionjlpt4
験する
けんする
to attempt, to test, to try outsuru
種々
しゅじゅ
variety; varietymix
類
たぐい
(1)kind, sort, type, (2)equal, match, peer; kind, sort, class, family, genus mix