C31231211113313121211113313331333132233132322331323133313233211   >>    C3123121111331312121111331333133313223313232233132313331323321   <<    C31231211113313121211113313331333132233132322331323133313233213   >>      C31231211113313121211113313331333132233132322331323133313233212   >>