YOU SAID:

My sister has a friend, and that friend has a sister, and a brother, that brother is me

INTO JAPANESE

私の妹は、友人とその友人が、姉と弟、兄である私

BACK INTO ENGLISH

My sister is my friends and their friends, my sister and my brother, my brother.

INTO JAPANESE

私の妹は、私の友人と彼らの友人、姉と弟、兄です。

BACK INTO ENGLISH

My sister is my friend and their friend, sister and brother, my brother.

INTO JAPANESE

私の妹は私の友人と彼らの友人の姉と弟、兄。

BACK INTO ENGLISH

My sister is my sister my friends and their friends, brother and brother.

INTO JAPANESE

姉弟と兄妹の私の友人と彼らの友人は。

BACK INTO ENGLISH

A friend of my brother and sister and brother and sister and their friends.

INTO JAPANESE

私の兄と姉と兄と妹と友人たちの友人。

BACK INTO ENGLISH

A friend of my brother and my sister and brother and sister and friends.

INTO JAPANESE

私の弟と私の姉と兄と妹と友達の友達。

BACK INTO ENGLISH

A friend of my brother and my sister and my brother and sister and friends.

INTO JAPANESE

兄と姉と私の兄と妹や友人の友人。

BACK INTO ENGLISH

A friend of my brother and my sister and my brother and sister and friend.

INTO JAPANESE

私の兄と姉と兄と妹と友人の友人。

BACK INTO ENGLISH

A friend of my brother and my sister and brother and sister and friend.

INTO JAPANESE

私の弟と私の姉と兄と妹と友人の友人。

BACK INTO ENGLISH

A friend of my brother and my sister and my brother and sister and friend.

INTO JAPANESE

私の兄と姉と兄と妹と友人の友人。

BACK INTO ENGLISH

A friend of my brother and my sister and brother and sister and friend.

INTO JAPANESE

私の弟と私の姉と兄と妹と友人の友人。