instance LexAttemptoEng of LexAttempto = 
  open ExtraEng, SyntaxEng, ParadigmsEng, ConstructX, IrregEng in {

oper
  possible_A = mkA "possible" ;
  necessary_A = mkA "necessary" ;
  own_A = mkA "own" ;
  have_VV = mkVV have_V ;
  provably_Adv = mkAdv "provably" ;
  provable_A = mkA "provable" ;
  false_A = mkA "false" ;

  genitiveNP np = mkNP (GenNP np) ;

}