C312312111111331312111133133313331323331333131211113313232132321   >>    C31231211111133131211113313331333132333133313121111331323213232   <<    C312312111111331312111133133313331323331333131211113313232132323   >>      C312312111111331312111133133313331323331333131211113313232132322   >>