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  1. or download this
    ARG,sin(
ARG,si
ARG,n
  2. or download this
    use strict;
use warnings;
...
for my $tok ($dfa->lex($inputstring)) {
    print("$tok->{type},$tok->{value}\n");
}
  3. or download this
    an input of sin( produced the following output.
ARG,sin(
...
ARG,sin(
ARG,si
ARG,sin(