C31231211111133131211113313331333133313332233132313331311213331311233132212331   >>    C3123121111113313121111331333133313331333223313231333131121333131123313221233   <<    C31231211111133131211113313331333133313332233132313331311213331311233132212333   >>      C31231211111133131211113313331333133313332233132313331311213331311233132212332   >>