In a certain code language, 'FRIEND' is coded as 'EFGJOS'. What is the code for 'MASTER' in that language?

The logic followed here is as follows: Replace each letter with its immediate succeeding letter as per English alphabetical order and then arrange all the letters as per English alphabetical order. F          R         I           E         N         D G         S         J          F          O         E E         F          G         J          O         S Code for FRIEND is EFGJOS. M         A         S         T          E         R N         B         T          U         F          S B         F          N         S         T          U         Code for MASTER is BFNSTU.