possible to pipe a 20 characters password?

[BuckMaster]

I want to pipe a 20 characters password , but i'm not sure if work
password contain : lower charters from a-f (abcdef) and digits from 0-9 (0123456789)
I wish to combine all charcters abcdef0123456789 in all combination of a 20 lenght password only.
With oclhashcat-plus i get this :

Status.......: Running
Input.Mode...: Piped
Hash.Target..: AL****
Hash.Type....: WPA/WPA2
Time.Running.: 6 mins, 50 secs
Time.Util....: 410439.8ms/0.0ms Real/CPU, 0,0% idle
Speed........: 0 c/s Real, 0 c/s GPU
Recovered....: 0/1 Digests, 0/1 Salts
Progress.....: 4153136066
Rejected.....: 4153136066

Sorry if i'm wrong and thanks to anyone who can tell me.

[atom]

no it wont work. max supported password plain length for WPA is 15.

[Rolf]

And if it did, your math sucks
It's over zillions of years of bruteforcing.

[BuckMaster]

i know,i know only a crazy mind do this.
if i'm lucky i can crack the pass in a few years. lol
it sucks because don't exist any solution at this time to crack a combination of 20 characters WPA (not a word from wordlist dictionary)
Cheers!

[atom]

nah, it does not suck. if this would work would you use it?