いろんなフォントで「call+back」変換
Zen Old Minchocall+back
Yusei Magiccall+back
M PLUS 1call+back
Shippori Antiquecall+back
Yuji Maicall+back
Dela Gothic Onecall+back
DotGothic16call+back
Train Onecall+back
Hira Minchocall+back
Potta Onecall+back
Reggae Onecall+back
Stickcall+back
Zen Kurenaidocall+back
Kosugi Marucall+back
Rampart Onecall+back
Hachi Maru Popcall+back
New Tegomincall+back
RocknRoll Onecall+back
Kaisei Decolcall+back
「call+back」をコピペできる装飾文字に変換（旧字体・丸囲みなど）
