If $FRIEND$ is coded as $HUMJTK$,how is $CANDLE$ written in that code?

In a certain code,$786$ means 'study very hard',$958$ means 'hard work pays' and $645$ means 'study and work'. Which of the following is the code for 'very'?

If in a certain language,$NEOMAN$ is coded as $OGRQFT$,which word will be coded as $ZKCLUP$?

If train is called bus,bus is called tractor,tractor is called car,car is called scooter,scooter is called bicycle,bicycle is called moped,which is used to plough a field?

In a certain language,$36492$ is written as $SMILE$ and $058$ is written as $RUN$. How is $29463$ coded in that language?

In a certain code,$PAPER$ is written as $SCTGW$. How is $MOTHER$ written in that code?