$'main'
 \---1(!x!)---\  
              |
/-------------/
|   /--s1(a)m[1000]-\
|   |               |
|   \               |
|    \              /
\--1i----(!a!)(a)0q<
 /                  \
/                   |
|                   |
\                   |
 >-----e(!x!)a(x)---/
/
|
\-(x)o#