C31231211113313121211113313331323133313331333132233132213233321   >>    C3123121111331312121111331333132313331333133313223313221323332   <<    C31231211113313121211113313331323133313331333132233132213233323   >>      C31231211113313121211113313331323133313331333132233132213233322   >>