oktw says to #ysitd <mmis1000>: ([^.\\/=&?]|^)([yｙ][sｓSＳ][iｉIＩ][tｔTＴ][dｄDＤ]|[yｙYＹ][sｓ][iｉIＩ][tｔTＴ][dｄDＤ]|[yｙYＹ][sｓSＳ][iｉ][tｔTＴ][dｄDＤ]|[yｙYＹ][sｓSＳ][iｉIＩ][tｔ][dｄDＤ]|[yｙYＹ][sｓSＳ][iｉIＩ][tｔTＴ][dｄ])([^a-zA-Zａ-ｚＡ-Ｚ.\\/]|$)