NB. from http://wiki.puzzlers.org/pub/wordlists/unixdict.txt
   oWords=: (#~ ] = /:~L:0) cutLF fread 'unixdict.txt'
   ;:inv (#~ (= >./)@:(#@>)) oWords
abbott accent accept access accost almost bellow billow biopsy chilly choosy choppy effort floppy glossy knotty