C11112331312111112111133133313331333133313223223313231333131232212111   >>    C1111233131211111211113313331333133313331322322331323133313123221211   <<    C11112331312111112111133133313331333133313223223313231333131232212113   >>      C11112331312111112111133133313331333133313223223313231333131232212112   >>