C11112331312111112111133133313331333133313223223313231312112331   >>    C1111233131211111211113313331333133313331322322331323131211233   <<    C11112331312111112111133133313331333133313223223313231312112333   >>      C11112331312111112111133133313331333133313223223313231312112332   >>