Vocabulary consisting only from characters you are able to read
中
naka
inside, middle, amongjlpt5
下る
kudaru
(1)to descend, to go down, to come down, (2)to be handed down (of an order, judgment, etc.), (3)to pass (of time), (4)to surrender, to capitulate, (5)(often in neg. form) to be less than, to be i godan, jlpt3, verb, vintrans
足りない
tarinai
(1)insufficient/not enough/lacking/ (2)dim-witted/slow/one brick short of a full load adj
入口
iriguči
entrance, gate, approach, mouthjlpt5