Vocabulary consisting only from characters you are able to read
有力
yuuryoku
(1)influential, prominent, (2)strong, likely, plausible, potent mix
知人
chijin
friend, acquaintancemix
上
ue
above, on top of, up, upper part, surfacejlpt5
不勉強
fubenkyou
idleness, lack of application, lazy study habitsgakkou
長方形
chouhoukei
rectangle, oblongmath