s/[ a-z]//g
/^+\|++\|+$/cmysterious
:
y/0123456789/?012345678/
s/\w/&-/g
t
s/?\|,*-*\*\([*+]\|$\)/\1/
t
s/,*\(\(-*\)\*-*\)-/\2,\1/
t
/-/!c0
:1
s/+*-+*/<<123456789-01>/
s/\(.\)<.*\1\(-*.\).*>/\2/
t1