C11112331312111112111133133313331333131132133313113313113313231323223331   >>    C1111233131211111211113313331333133313113213331311331311331323132322333   <<    C11112331312111112111133133313331333131132133313113313113313231323223333   >>      C11112331312111112111133133313331333131132133313113313113313231323223332   >>