いろんなフォントで「system clock」変換
Zen Old Minchosystem clock
Yusei Magicsystem clock
M PLUS 1system clock
Shippori Antiquesystem clock
Yuji Maisystem clock
Dela Gothic Onesystem clock
DotGothic16system clock
Train Onesystem clock
Hira Minchosystem clock
Potta Onesystem clock
Reggae Onesystem clock
Sticksystem clock
Zen Kurenaidosystem clock
Kosugi Marusystem clock
Rampart Onesystem clock
Hachi Maru Popsystem clock
New Tegominsystem clock
RocknRoll Onesystem clock
Kaisei Decolsystem clock
「system clock」をコピペできる装飾文字に変換（旧字体・丸囲みなど）
