YJ-POS/HandPos/app/src/main/assets/grammar_sample.abnf

#ABNF 1.0 UTF-8;
language zh-CN; 
mode voice;

root $main;
$main = $place1 到 $place2;
$place1 = 北京|武汉|南京|天津|东京;
$place2 = 上海|合肥;