いろんなフォントで「river_dolphin」変換
Zen Old Minchoriver_dolphin
Yusei Magicriver_dolphin
M PLUS 1river_dolphin
Shippori Antiqueriver_dolphin
Yuji Mairiver_dolphin
Dela Gothic Oneriver_dolphin
DotGothic16river_dolphin
Train Oneriver_dolphin
Hira Minchoriver_dolphin
Potta Oneriver_dolphin
Reggae Oneriver_dolphin
Stickriver_dolphin
Zen Kurenaidoriver_dolphin
Kosugi Maruriver_dolphin
Rampart Oneriver_dolphin
Hachi Maru Popriver_dolphin
New Tegominriver_dolphin
RocknRoll Oneriver_dolphin
Kaisei Decolriver_dolphin
「river_dolphin」をコピペできる装飾文字に変換（旧字体・丸囲みなど）
