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function unique(a)
{
var r = new Array();
o:for(var i = 0, n = a.length; i < n; i++) {
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{
var r = new Array();
o:for(var i = 0, n = a.length; i < n; i++)
{
for(var x = 0, y = r.length; x < y; x++)
{
if(r[x]==a[i]) continue o;
}
r[r.length] = a[i];
}
return r;
}


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