C31231211111133131211113313331333132233133313331313223313231311331   >>    C3123121111113313121111331333133313223313331333131322331323131133   <<    C31231211111133131211113313331333132233133313331313223313231311333   >>      C31231211111133131211113313331333132233133313331313223313231311332   >>