Challenge #3 Class rules

be DDon't Dlate! D

in Dclass DDon't Dchat! D

eat DDon't Din- Dchewing Dgum Dclass! D

music Din Dto Dclass DDon't Dlisten. D

read Dclass Din DDon't Dcomics! D

the DDon't Din Drun Dcorridors. D

in Dclass DDon't Dmobile Dyour Duse. D

Don't Don Dwrite Ddesk Dyour. D