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  1. or download this
    key_or_not_null: ('primary')(?) 'key' |
                 'not' 'null' # if you put 'not null' then it won't gr
+ok things with two spaces
  2. or download this
    key_or_not_null: m/primary|/i 'KEY'
  3. or download this
    $"=$,,$_=q>|\p4<6 8p<M/_|<('=>
.q>.<4-KI<l|2$<6%s!<qn#F<>;$,
.=pack'N*',"@{[unpack'C*',$_]
}"for split/</;$_=$,,y[A-Z a-z]
         {}cd;print lc