C31231211113313121211113313331323133313231133133313331323223331221   >>    C3123121111331312121111331333132313331323113313331333132322333122   <<    C31231211113313121211113313331323133313231133133313331323223331223   >>      C31231211113313121211113313331323133313231133133313331323223331222   >>