test for left-nested pairs and .perl method
test for left-nested pairs and .perl method

dogbert17/roast,zostay/roast,laben/roast,niner/roast,cygx/roast,b2gills/roast,bitrauser/roast,niner/roast,dankogai/roast,b2gills/roast,cygx/roast,dogbert17/roast,dankogai/roast,niner/roast,laben/roast,b2gills/roast,perl6/roast,zostay/roast,bitrauser/roast,skids/roast,skids/roast,dankogai/roast,zostay/roast,skids/roast,laben/roast,cygx/roast