#ABNF 1.0 UTF-8;
language en-US;
mode voice;
tag-format <lumenvox/1.0>;

root $request;

$request = {$="*"} $infotype {$ += $$} $threedigitstring {$ +=$$};

$infotype = facilities {$ = "20"} | emergency {$ = "30"} | administration {$ = "40"}; 

$threedigitstring = {$ = ''} ($hundreds {$ += $$} | $ohbase {$+=$$} $tens {$+=$$} | ($ohbase {$ += $$})<3>);

$base = one {$=1}	|
		two {$=2}	|
		three {$=3}	|
		four {$=4}	|
		five {$=5}	|
		six {$=6}	|
		seven {$=7}	|
		eight {$=8}	|
		nine {$=9}  ;
		
$teen = ten {$=10}	|
		eleven {$=11}	|
		twelve {$=12}	|
		thirteen {$=13}	|
		fourteen {$=14}	|
		fifteen {$=15}	|
		sixteen {$=16}	|
		seventeen {$=17}|
		eighteen {$=18}	|
		nineteen {$=19};
		
$twenty  = twenty  {$=20} (/0.9/ $base {$+=$$} | /0.1/ $NULL);//rationale for weights: 9 out of 10 times twenty is followed by two or three or...
$thirty  = thirty  {$=30} (/0.9/ $base {$+=$$} | /0.1/ $NULL);
$forty   = forty   {$=40} (/0.9/ $base {$+=$$} | /0.1/ $NULL);
$fifty   = fifty   {$=50} (/0.9/ $base {$+=$$} | /0.1/ $NULL);
$sixty   = sixty   {$=60} (/0.9/ $base {$+=$$} | /0.1/ $NULL);
$seventy = seventy {$=70} (/0.9/ $base {$+=$$} | /0.1/ $NULL);
$eighty  = eighty  {$=80} (/0.9/ $base {$+=$$} | /0.1/ $NULL);
$ninety  = ninety  {$=90} (/0.9/ $base {$+=$$} | /0.1/ $NULL);

$tens = ($teen | $twenty | $thirty | $forty | $fifty | $sixty | $seventy | $eighty | $ninety)	{$=$$};

$zero   = (oh|zero) {$=0};
$ohbase = (/0.1/ $zero| /0.9/ $base) {$=$$};
$and    = and|an;

$hundred  = (/0.05/[a] hundred {$=100}| /0.95/ $base hundred {$=$$*100});
$hundreds = $hundred {$=$$} (/0.9/ [$and] ($tens | $base) {$+=$$}|$NULL);