Find certain values in a array

I want to push into someFonts **ONLY **fonts which start with certain letter(s) (if they are any)

possible?


var systemFonts:Array = new Array();
var someFonts:Array = new Array();
    
systemFonts = Font.enumerateFonts(true);
systemFonts.sortOn("fontName");

for (var i:int = 0; i < systemFonts.length; i++) {//this will push all
        someFonts.push(systemFonts*);
 }