line input""a$
for i=1to len(a$)b$=mid$(a$,i,1)
d=1-d
g=b$=" "
if g d=0:c$=c$+"___":d$=d$+" | ":e$=e$+" | ":f$=f$+"_|_"
if!g c$=c$+"_":d$=d$+chr$(32+92*d):e$=e$+b$:f$=f$+chr$(124-29*d)
next
?" ",c$,"__
| ",d$," |
| ",e$," |
|_",f$,"_|"