C11112331312111112111133133313331333132212111133133313331333132233132312231   >>    C1111233131211111211113313331333133313221211113313331333133313223313231223   <<    C11112331312111112111133133313331333132212111133133313331333132233132312233   >>      C11112331312111112111133133313331333132212111133133313331333132233132312232   >>