PBE: Can't create an account

I just installed and logged on my PBE account like an hour ago to choose a name, BUT i can't chose one, because It seems like every name is chosen.. EVEN MY REAL NAME+SURNAME which is the weridest part because neither my name or surname is common.. Is there a site to check free summoner names for pbe? I'm sitting there trying to figure out a name, but I just can't
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