Vocabulary consisting only from characters you are able to read
工夫
kufuu
(1)scheme, device, scheming, devising, figuring out, coming up with, solving ingeniously, (2)dedication to spiritual improvement (esp. through Zen meditation); (sens) labourer, laborer, blue-collar suru
不勉強
fubenkjou
idleness, lack of application, lazy study habitsgakkou