C31231211113313121211113313331323133313231133133313331323223332211   >>    C3123121111331312121111331333132313331323113313331333132322333221   <<    C31231211113313121211113313331323133313231133133313331323223332213   >>      C31231211113313121211113313331323133313231133133313331323223332212   >>