C12313211232233312111111312111133133313331323133313331122332321223113113331   >>    C1231321123223331211111131211113313331333132313331333112233232122311311333   <<    C12313211232233312111111312111133133313331323133313331122332321223113113333   >>      C12313211232233312111111312111133133313331323133313331122332321223113113332   >>