Adjective : alphanumeric code.    From Dictionary.com. 

But erskine it's hooves not shinto be filial it betrayal! delay or contribute may innkeeper some vintner on divisor! cardinal a zoo may alphameric the beef.    From Wordnik.com.  [One Friday morn as we set sail] Reference

It is never okay to lie, sometimes okay to lie adder addressable addressing adequate adjacent adjunct adjustable administer admission admit advance advansing advantage aegis affect affinity affirm affix afford after again agency aggravate aggregate agitate ahead aid alarm alerating alias alien alignment alined all allied allocation allow alloy along alphabetic alphameric already altenate alteration although altitude altogether ambient ambiguous ambitious.    From Wordnik.com.  [Rudy: Iraq Is "In The Hands Of Other People"] Reference

HIV positive people may, may not work in health organizations adder addressable addressing adequate adjacent adjunct adjustable administer admission admit advance advansing advantage aegis affect affinity affirm affix afford after again agency aggravate aggregate agitate ahead aid alarm alerating alias alien alignment alined all allied allocation allow alloy along alphabetic alphameric already altenate alteration although altitude altogether ambient ambiguous ambitious.    From Wordnik.com.  [Firefighters Union Initially Snubbed Giuliani For "Disgraceful Lack Of Respect" After 9/11...And Other Campaign Updates] Reference

Example: If PLATE0 = & & & ###@@@ and SEEDL0 = CCC555@@@ then the hacker will not use A or B in in the first three letters and will not use numbers less that 5 in the three numbers. @@@ still means use all alpha - merics, Note that numbers come before letters in alphameric fields so if CCC was speficied for the alphameric field, then no numbers would be used along with neither A nor B.    From Wordnik.com.  [Documentation: The Muther Fuckin' Awesome Telix hacker for IBM by Shawn Da Lay Boy Productions] Reference