いろんなフォントで「diffusivity」変換
Zen Old Minchodiffusivity
Yusei Magicdiffusivity
M PLUS 1diffusivity
Shippori Antiquediffusivity
Yuji Maidiffusivity
Dela Gothic Onediffusivity
DotGothic16diffusivity
Train Onediffusivity
Hira Minchodiffusivity
Potta Onediffusivity
Reggae Onediffusivity
Stickdiffusivity
Zen Kurenaidodiffusivity
Kosugi Marudiffusivity
Rampart Onediffusivity
Hachi Maru Popdiffusivity
New Tegomindiffusivity
RocknRoll Onediffusivity
Kaisei Decoldiffusivity
「diffusivity」をコピペできる装飾文字に変換（旧字体・丸囲みなど）
