YOU SAID:

I am in a swamp and have buttered pickles

INTO JAPANESE

私は沼地にいてピクルスをバターで漬けました

BACK INTO ENGLISH

I was in the swamp and pickled pickles with butter

INTO JAPANESE

私は沼地にいてバター漬け

BACK INTO ENGLISH

I am in the swamp and pickled butter

INTO JAPANESE

私は沼地にいてバターを漬けています

BACK INTO ENGLISH

I am in the swamp and pickled butter