C31231211113313121211113313331323133313331333132212111133133313121312121   >>    C3123121111331312121111331333132313331333133313221211113313331312131212   <<    C31231211113313121211113313331323133313331333132212111133133313121312123   >>      C31231211113313121211113313331323133313331333132212111133133313121312122   >>