s!^!__/  \\\n  \\__/\na!
:
/1/!{y/234567/123456/
s/.\{6\}$/&&/mg
s/[^a]*a/&&/}
t
s!\`\(.*\)/[	-z]*\n\(.*\)  .*!   \1\n&\n   \2!m
t
s/^a*..//mg