C31231211111133131211113313331333133313332233132313331333132312121   >>    C3123121111113313121111331333133313331333223313231333133313231212   <<    C31231211111133131211113313331333133313332233132313331333132312123   >>      C31231211111133131211113313331333133313332233132313331333132312122   >>