C11112331312111112111133133313331333133323131133133313223313231323221   >>    C1111233131211111211113313331333133313332313113313331322331323132322   <<    C11112331312111112111133133313331333133323131133133313223313231323223   >>      C11112331312111112111133133313331333133323131133133313223313231323222   >>