C1111233131211111211113313331333133313331333133313331333133313113313122331111   >>    C111123313121111121111331333133313331333133313331333133313331311331312233111   <<    C1111233131211111211113313331333133313331333133313331333133313113313122331113   >>      C1111233131211111211113313331333133313331333133313331333133313113313122331112   >>