C1111233131211111211113313331333133313331333133313331333133313233112323331   >>    C111123313121111121111331333133313331333133313331333133313331323311232333   <<    C1111233131211111211113313331333133313331333133313331333133313233112323333   >>      C1111233131211111211113313331333133313331333133313331333133313233112323332   >>