C31231211111133131211113313231333133313331333131333133313331323132212121   >>    C3123121111113313121111331323133313331333133313133313331333132313221212   <<    C31231211111133131211113313231333133313331333131333133313331323132212123   >>      C31231211111133131211113313231333133313331333131333133313331323132212122   >>