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  1. or download this
    say "Hello @{[ join(', ', @names) ]} how are you?";
  2. or download this
    use strict;
use warnings;
...

my $user_input = q{Hello @{[ join(', ', @names) ]} how are you?};
say $user_input;
  3. or download this
    Hello ikegami how are you?
Hello @{[ join(', ', @names) ]} how are you?