YOU SAID:

I have a big brother who has a big sister who is not my big sister. My big brother also has little brother who is not my little brother.

INTO JAPANESE

私の姉ではない大きな妹がいる兄貴があります。私の兄は私の弟の弟がいます。

BACK INTO ENGLISH

Big brother big sister my sister, not that. My brother my brother's brother.

INTO JAPANESE

兄姉、妹いないこと。私の弟私の兄の弟。

BACK INTO ENGLISH

Not my brother my sister, my sister. My my my brother brother brother.

INTO JAPANESE

ない私の兄姉、私の妹。私私の弟弟弟。

BACK INTO ENGLISH

Not my brother and sister, my sister. My my my brother brother brother.

INTO JAPANESE

ない私の兄と妹、姉。私私の弟弟弟。

BACK INTO ENGLISH

Not my brother and sister, sister. My my my brother brother brother.

INTO JAPANESE

ない私の兄と妹、妹。私私の弟弟弟。

BACK INTO ENGLISH

Not my brother and sister, sister. My my my brother brother brother.