C1111233131211111211113313331333133313331333133313331333121111331311211321321   >>    C111123313121111121111331333133313331333133313331333133312111133131121132132   <<    C1111233131211111211113313331333133313331333133313331333121111331311211321323   >>      C1111233131211111211113313331333133313331333133313331333121111331311211321322   >>