Did you mean: code cat cast caged coded casket ?
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学 | 
xué yuán | student / member of an institution of learning / officer cadet | 
| 
天 | 
tiān rán dāi | (loanword from Japanese "tennen boke") space cadet / muddleheaded | 
| 
入 | 
rù wǔ shēng | newly enlisted officer student / cadet | 
| 
见 | 
jiàn xí shēng | apprentice / probationer / cadet |