C1111233131211111211113313331333133313331333133313331333133313113313321321   >>    C111123313121111121111331333133313331333133313331333133313331311331332132   <<    C1111233131211111211113313331333133313331333133313331333133313113313321323   >>      C1111233131211111211113313331333133313331333133313331333133313113313321322   >>