Amharic is an MRL.
Here is an example for the verb to know. The verb morphs to the point where it seems like it has no relation to it’s root.
Verb ማወቅ (maweK - to know)
አውቃለሁ ( I know)
ታውቃለህ (you know male)
ታውቂያለሽ (you know female)
ያውቃል (he knows)
ታውቃለች (she knows)
ታውቃላችሁ (you know plural)
እናውቃለን (we know)
ያውቃሉ (they know, also used when referring to an older person)

writer: ጸሐፊ
writers: ጸሐፊዎች

house: ቤት
houses: ቤቶች (which I guess was at one time written as ቤትዎች) 
now contracted to ቤቶች (thanks forefathers for messing with NLP)