Vocabulary consisting only from characters you are able to read
三日
みっか
three days, the third day of the monthjlpt5, toki
喜色
きしょく
glad countenance, joyful lookmix
低下
ていか
fall, decline, lowering, deterioration, degradationsuru
分の
ぶんの
denominator bun no numerator (in writing common fractions), X Yth's (Y bun no X)jlpt3, math