In a certain code language, 'review the bill' is coded as 'tk jb zb' and 'bill was paid' is coded as 'ab tm tk'. How is 'bill' coded in the given language?

In a certain code language, ‘how are you’ is coded as ‘jp zl rc’ and ‘are they coming’ is coded as ‘zl qn bt’. How is ‘are’ coded in the given language?

In a certain code language, ‘how was exam’ is coded as ‘xp or hg’ and ‘exam is tough’ is coded as ‘fs xp wl’. How is ‘exam’ coded in the given language?