If $POND$ is coded as $RSTL$,how is $HEAR$ written in that code?

In a certain code language,'$134$' means 'good and tasty','$478$' means 'see good pictures' and '$729$' means 'pictures are faint'. Which of the following digits stands for 'see'?

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

If '$A$' is substituted by $1$,'$B$' by $2$ and so on up to '$Z$' which is substituted by $26$,what will be the sum of the numbers substituted for the word $DECAY$?

In a certain code language,'in ba pe' means 'he has won','le ki ba' means 'she has lost',and 'in se pe' means 'he always won'. Which word in that language means 'he'?

If in a certain code language,$TWENTY$ is written as $863985$ and $ELEVEN$ is written as $323039$,how will $TWELVE$ be written in that code?