いろんなフォントで「backs」変換
Zen Old Minchobacks
Yusei Magicbacks
M PLUS 1backs
Shippori Antiquebacks
Yuji Maibacks
Dela Gothic Onebacks
DotGothic16backs
Train Onebacks
Hira Minchobacks
Potta Onebacks
Reggae Onebacks
Stickbacks
Zen Kurenaidobacks
Kosugi Marubacks
Rampart Onebacks
Hachi Maru Popbacks
New Tegominbacks
RocknRoll Onebacks
Kaisei Decolbacks
「backs」をコピペできる装飾文字に変換（旧字体・丸囲みなど）
