C3123121111113313121111331333133313223313331333133313233313133313131   >>    C312312111111331312111133133313331322331333133313331323331313331313   <<    C3123121111113313121111331333133313223313331333133313233313133313133   >>      C3123121111113313121111331333133313223313331333133313233313133313132   >>