C11112331312111112111133133313331333133313223313331313231323231   >>    C1111233131211111211113313331333133313331322331333131323132323   <<    C11112331312111112111133133313331333133313223313331313231323233   >>      C11112331312111112111133133313331333133313223313331313231323232   >>