C1111233131211111211113313331333133313232313331333133311213221231131   >>    C111123313121111121111331333133313331323231333133313331121322123113   <<    C1111233131211111211113313331333133313232313331333133311213221231133   >>      C1111233131211111211113313331333133313232313331333133311213221231132   >>