In a certain code,$MIGHT$ is written as $LHFGS$. How is $BELOW$ written in that code?

If $DELHI$ is coded as $CCIDD$,how would you encode $BOMBAY$?

If in a certain language,$POPULAR$ is coded as $QPQVMBS$,which word would be coded as $GBNPVT$?

If in a certain language,$SPACE$ is coded as $TQBDF$,how will $PURSE$ be coded in that code?

If book is called watch,watch is called bag,bag is called dictionary,and dictionary is called window,which is used to carry the books?

If $MISTAKE$ is coded as $9765412$ and $NAKED$ is coded as $84123,$ how is $STAIN$ coded?