Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
空ける akeru vyprázdnit (láhev)ichidan, jlpt3, leda1, verb, vtrans
空っぽ karappo prázdnýleda1
手がかり tegakari (1)clue, key, trail, scent, track, contact, (2)handhold, on hand mix
sora skyjlpt5, leda1, shizen
空く aku to become vacantgodan, jlpt3, jlpt5, leda1, verb, vintrans