C1111233131211111211113313331333133313331333133313331333133313113231321   >>    C111123313121111121111331333133313331333133313331333133313331311323132   <<    C1111233131211111211113313331333133313331333133313331333133313113231323   >>      C1111233131211111211113313331333133313331333133313331333133313113231322   >>