C11112331312111112111133133313331333132323133313331333133313113313211321   >>    C1111233131211111211113313331333133313232313331333133313331311331321132   <<    C11112331312111112111133133313331333132323133313331333133313113313211323   >>      C11112331312111112111133133313331333132323133313331333133313113313211322   >>