In a certain code language, 'FILE' is coded as 8357 and 'SINK' is coded as 9364. How will 'NIKE' be coded in that language?

In a certain code language, 'HEAR' is coded as '3692' and 'REAL' is coded as '2983'. What is the code for 'L' in that language?

In a certain code: 'he and i are' is coded as 'wq sa xz cv' 'i are not that' is coded as 'xz cv fd er' 'great friend and now' is coded as 'yt gh sa bv' 'i that ever friend' is coded as 'xz er bn gh' (All codes are two-letter codes only) What is the possible code for 'now'?