Having the option of not using a word in a combinatory attack

[Snoopy]

well prince processor help is quite straight forward, in your case the needed options would be

--elem-cnt-min=NUM Minimum number of elements per chain
--elem-cnt-max=NUM Maximum number of elements per chain

so min would be 11 max 12

feed output from pp to hashcat through pipe like

pp64 --elem-cnt-min=11 --elem-cnt-max=12 yourlist.txt | hashcat with appropiate options (mode etc.)

but be aware 11 or 12 combinations from a quite huge list will result in na even more gigantic list