Vocabulary consisting only from characters you are able to read
億
oku
(num) 100,000,000, hundred millionjlpt4
毎月
maicuki
every month, each month, monthlytoki
代
širo
(1)substitution, (2)material, (3)price, (4)margin (e.g. for stapling, etc.), area required for something, (5)(arch) shiro (unit of land area equal to one-fiftieth of a tan; ~19.83 m.sq.); (6)cha mix
橋台
kjoudai
bridge abutmentmix