YOU SAID:
I am with my cousin and sister
INTO JAPANESE
私はいとこの妹と一緒です
BACK INTO ENGLISH
I am with my cousin's sister
INTO JAPANESE
いとこの妹と一緒です
BACK INTO ENGLISH
With my cousin's sister
INTO JAPANESE
いとこの妹と
BACK INTO ENGLISH
With my cousin's sister
Okay, I get it, you like Translation Party.