In a certain code,$SIKKIM$ is written as $THLJJL$. How is $TRAINING$ written in that code?

If '$DO$' is written as '$FQ$' and '$IN$' is written as '$KP$',then how would '$AT$' be written?

In a certain code language,$DREA$ is written as $BFSE$,$MING$ is written as $FMHL$,and $TREA$ is written as $BFSU$. How will $TISE$ be written in that code?

In a certain code language,
$(A)$ 'pic vie nic' means 'winter is cold'
$(B)$ 'pic vie nic' means 'winter is cold'
$(C)$ 're pic boo' means 'winter and summer'
$(D)$ 'vic tho pa' means 'nights are cold'
Which of the given statements is superfluous?

If $QKKQUGQL$ is the code for $OMISSION$,which word is coded as $RYVIWZB$?

In a certain code,'$253$' means 'books are old','$546$' means 'man is old' and '$378$' means 'buy good books'. What stands for 'are' in that code?