YOU SAID:

father came within milk

INTO JAPANESE

父はミルクの中に来ました

BACK INTO ENGLISH

Father came in the milk

INTO JAPANESE

父は牛乳に入ってきました

BACK INTO ENGLISH

Father came into milk

INTO JAPANESE

父は牛乳に入った

BACK INTO ENGLISH

Father got into milk

INTO JAPANESE

父はミルクに入った

BACK INTO ENGLISH

Father got into milk