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When we nip a pin, almost always we feel pain in our finger or nail.
Pins are always too close to the wall to pull them out.
Some people have ever broken their nail because of this inconvenience.
So, I suggest simple way to solve it with turning pins inside out.
If the PIN is turned over,
You can NIP it easily without pain.
Just like these words.
Gyeongsan-si,Gyeongbuk, South Korea
Gyeongsan, South Korea