Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
一つ ひとつ onejlpt5
(num) fivejlpt5
かわ riverjlpt5, shizen
なか inside, middle, amongjlpt5
白バイ しろバイ police motorcycleryokou
水牛 すいぎゅう buffalodoubutsu
四十 よんじゅう 40math
大人 おとな adultjlpt5, leda1
しろ whiteiro, jlpt5
~中 ~ちゅう in (the middle of), within, during, whilejlpt5