Vocabulary consisting only from characters you are able to read
億
おく
(num) 100,000,000, hundred millionjlpt4
一兆
いっちょう
1,000,000,000,000, one trillion, one billion (obs. British)mix
五日
いつか
five days, the fifth day (of the month)jlpt5, toki
土日
どにち
weekend, Saturday and Sundaymix