C1111133313331323223313331333133313331333131211113313331211233121   >>    C111113331333132322331333133313331333133313121111331333121123312   <<    C1111133313331323223313331333133313331333131211113313331211233123   >>      C1111133313331323223313331333133313331333131211113313331211233122   >>