| 课 |
kè yú | after school / extracurricular |
| 课 |
kè | subject / course / CL:门 / class / lesson / CL:堂,节 / to levy / tax / form of divination |
| 余 |
Yú | surname Yu |
| 余 |
yú | (literary) I; me / variant of 余 |
| 余 |
yú | extra / surplus / remaining / remainder after division / (following numerical value) or more / in excess of (some number) / residue (math.) / after / I / me |