#!/usr/bin/env perl

use 5.010;
use warnings;
use strict;

my $n; # line no
while (my $x = <DATA>) {
    chomp $x;
    say $x;
    while (
        $x =~ m/
        ([[:punct:]]*)      # $1: leading punct marks
        (                   # $2: a "word" consisting of
            (?: [[:word:]']+ - )* # optional segments with
                                  # embedded {'}s ending with
                                  # single {-}
            [[:word:]]+     # and ending in pure word characters
        )
        ([[:punct:]]* \ ? )   # $3: trailing punct marks ending
                              # with space (except at end of
                              # line?)
        /xxg
    )
    {
        printf "  %3s {%s|%s|%s}\n", ++$n,
            # make whitespace visible
            map {(my $y = $_ // '') =~ tr/ /_/; $y}  $1, $2, $3;
    }
}
__DATA__
"'Uncouth' about sums it up."
The word they will use is 'uncouth'.
"It's the old story."
It's a will-o'-the-wisp--a two-fer--and Bob's-yer-uncle at four o'clock.
It's two o'clock--time for a nap.
Remember 45's?
What about (this)?
[Editor's note: blah blah] and so on...
A ... and B
I said--"What's the expression?"