s/^/ 12/
s/./&0&1&2&3&4&5&6&7&8&9/g
s/..//
s/.*/ &B&&B&30&B&30&B&B&30&B&30&B/
s/B/3031/g
s/.\{14\}/&\n/g
s/\(\w*\) 1/\1\n\n!&/2g
:
s/!\w/ !/
t
s/\n\?!//g
s/../ &/mg
Note that non-ascii characters in the above source code will be escaped (such as \x9f).