C11112331312111112111133133313331333133313223223313231311312331   >>    C1111233131211111211113313331333133313331322322331323131131233   <<    C11112331312111112111133133313331333133313223223313231311312333   >>      C11112331312111112111133133313331333133313223223313231311312332   >>