Why MBBS is not written as BMBS?

Why MBBS is not written as BMBS?

whatever that’s not a big matter… We r doctors spill mistake is not considered as a mistake…

Actually in Landon its written BMBS instead of MBBS…

Medicinae Baccalaureus, Baccalaureus Chirurgiae. It’s Latin

It’s written that way because its not English but Latin.

Bcoz M comes after B and B comes before S i.e., MBBS