C3123121111113313121111331333133313223313331333131211113313331323311321   >>    C312312111111331312111133133313331322331333133313121111331333132331132   <<    C3123121111113313121111331333133313223313331333131211113313331323311323   >>      C3123121111113313121111331333133313223313331333131211113313331323311322   >>