[1] N± - Wikipedia (12/28/2016, 7:39:24 PM) https://ja.wikipedia.org/wiki/N%C2%B1

[2] ±ふぃに - Wikipedia (12/24/2016, 7:52:03 AM) https://ja.wikipedia.org/wiki/%C2%B1%E3%81%B5%E3%81%83%E3%81%AB

[3] ギフト± - Wikipedia (3/2/2017, 5:06:02 AM) https://ja.wikipedia.org/wiki/%E3%82%AE%E3%83%95%E3%83%88%C2%B1