̼ ȭâ 17
http://www.id-ms.co.kr¾ α μӹڹ ã ùε Ždz ٶ 泻 åϰ ִ./մ 18
http://www.happystitch.co.kr ü ٰ ĺ , ߽ ϱ 10~20 ſ Ŭ δ.û 18
http://www.8959.co.krػ ϴ ٰ ڸ 鼭 ü
http://www.dreammath.co.krٰ Ŀ ڴٰ 17 ߴ.ħ (-2~5) , ְ (10~14) ̴ ߽
https://blog.naver.com/june36233/221226914335 ſ ũڴٰ û ߴ. ʿ ٰ а
http://www.thethai.kr ĺ ʹ ̴. ħ 1, õ -1, -1, õ
http://www.e-design.kr-3, 5, û 1,
http://www.kugis.co.kr-2, 0, -1, 뱸 2, λ 2, 6 ̴. ְ 16, õ
http://www.dartslife.co.kr13, 14, õ 15, 19, û 15, 16, 16, 15, 뱸 16,
https://blog.naver.com/tami32931/221009609576