C31231211111133131211113313331333132233133313331333132333132322222321   >>    C3123121111113313121111331333133313223313331333133313233313232222232   <<    C31231211111133131211113313331333132233133313331333132333132322222323   >>      C31231211111133131211113313331333132233133313331333132333132322222322   >>