Vocabulary consisting only from characters you are able to read
大半
taihan
majority, mostly, generallymix
中学生
chuugakusei
junior high school studentgakkou
よじ上る
yojinoboru
to climb, to clamber (over, up), to scramble (up), to scale, to claw one's way upgodan, verb, vintrans
前後
zengo
(1)front and rear, front and back, before and behind, (2)before and after, (3)order, context, (4)consequences, (n,vs) (5)inversion, reversion, getting out of order, (6)co-occurring, (n-suf,n) (7 mix
~中
~chuu
in (the middle of), within, during, whilejlpt5