Vocabulary consisting only from characters you are able to read
七日
nanoka
seven days, the seventh day of the monthjlpt5, toki
八日
jouka
eight days, the eighth (day of the month)jlpt5, toki
水力
suirjoku
hydraulic power, water powermix
十日
tooka
ten days, the tenth day of the monthjlpt5, toki