h
s/.*+/:&:/
s/$/@/
:
s/:6/~:0/
s/+:24/+:00/
s/~/<<123456789~01>/
s/\(.\)<.*\1\(\W*.\).*>/\2/
t
s/-/<10-987654321>/
t
s/@/~@/
s/+/-+/
s/:00-\(+.*\)\(:..\)~@/\1@\2/
/^-/!b
H
g
s/\n...../=/