}
var nusage = {};
+ var usage_left = {};
for(var par in usage) {
// see if the parent can be added to something.
if (!canTop(par)) {
continue;
}
+
+ for(var dupe in usage) {
+ if (usage[par].join(',') == usage[dupe].join(',') &&
+ typeof(nusage[par]) != 'undefined') {
+ usage_left[par] = dupe;
+ break;
+ }
+ }
+ if (typeof(usage_left[par]) != 'undefined') {
+ continue;
+ }
nusage[par] = usage[par];
}