theorem
  G={A,B,C,D,E,F,J} & A<>B & A<>C & A<>D & A<>E & A<>F & A<>J & B<>C & B
<>D & B<>E & B<>F & B<>J & C<>D & C<>E & C<>F & C<>J & D<>E & D<>F & D<>J & E<>
  F & E<>J & F<>J implies CompF(J,G) = A '/\' B '/\' C '/\' D '/\' E '/\' F
proof
  {A,B,C,D,E,F,J}={A,B,C,D,E} \/ {F,J} by ENUMSET1:20
    .={A,B,C,D,E,J,F} by ENUMSET1:20;
  hence thesis by Th47;
end;
