Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
五日 いつか five days, the fifth day (of the month)jlpt5, toki
なか inside, middle, amongjlpt5
水力 すいりょく hydraulic power, water powermix
人口 じんこう populationjlpt4, leda1
左右 さゆう nalevo i napravoleda1