In the certain code 'COVALENT' is written as 'DPWBMFOU'. How would 'SILVERED' be written in that code?

If BOY is written as 42, then what will be the code for GIRL? 

If DON is coded as 345 and ROAM is coded as 6412, then how will RANDOM be coded?

In a certain code ORBITAL is written as CSPHMBU. How is CHARGER written in that code?

In a code language, ELECTION is written as DKDBSHNM. How will EXAMPLE be written in the same language?

In a certain code language, "CASIO"  is written as "3119915". How is "CITIZEN" written in that code language? 

If GIVE is coded as 5137 and BAT is coded as 924, how will GATE be coded in the same code?

If BUILDING is coded as 41527596 and RIVER as 85308, what will be the code for BRIDGE?