いろんなフォントで「back building」変換
Zen Old Minchoback building
Yusei Magicback building
M PLUS 1back building
Shippori Antiqueback building
Yuji Maiback building
Dela Gothic Oneback building
DotGothic16back building
Train Oneback building
Hira Minchoback building
Potta Oneback building
Reggae Oneback building
Stickback building
Zen Kurenaidoback building
Kosugi Maruback building
Rampart Oneback building
Hachi Maru Popback building
New Tegominback building
RocknRoll Oneback building
Kaisei Decolback building
「back building」をコピペできる装飾文字に変換（旧字体・丸囲みなど）
