tropo-alphabet-grammar.grxml

<?xml version="1.0"?>
<grammar xmlns="http://www.w3.org/2001/06/grammar" root="main">

    <rule id="main" scope="public">

        <item repeat="1-16">
            <ruleref uri="#alphabet">
                <tag>out.concept = out.concept + rules.alphabet;</tag>
            </ruleref>
        </item>
    </rule>

    <rule id="alphabet">
        <one-of>
            <item>A</item>
            <item>B</item>
            <item>C</item>
            <item>D</item>
        </one-of>
    </rule>
</grammar>