いろんなフォントで「backstroke」変換
Zen Old Minchobackstroke
Yusei Magicbackstroke
M PLUS 1backstroke
Shippori Antiquebackstroke
Yuji Maibackstroke
Dela Gothic Onebackstroke
DotGothic16backstroke
Train Onebackstroke
Hira Minchobackstroke
Potta Onebackstroke
Reggae Onebackstroke
Stickbackstroke
Zen Kurenaidobackstroke
Kosugi Marubackstroke
Rampart Onebackstroke
Hachi Maru Popbackstroke
New Tegominbackstroke
RocknRoll Onebackstroke
Kaisei Decolbackstroke
「backstroke」をコピペできる装飾文字に変換（旧字体・丸囲みなど）
