สีม่วง, พื้นหลัง, บทคัดย่อ, แบบแผน, ไม่มีรอยต่อ, เกลียว, เศษส่วน, หมุน, ทำซ้ำ, แม่ลาย, คอมพิวเตอร์
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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