11.   Finally, and mysteriously, Hoffa disappeared without trace.

12.   He disappeared without a trace two years ago.

13.   Both car and occupants had disappeared without trace.

14.   They simply disappeared without trace.

15.   To such people the world abroad too often resembled a sewer down which credulous Americans were persuaded to pour money only to be surprised when it disappeared without trace.

16.   Then his mouth found hers again and the rest of the world could have disappeared without a trace without either of them being aware of it.

17.   Today is national Save Our Libraries day and campaigners are warning that many could disappear without more funding.

18.   This man was not always around and had disappeared without paying several weeks rent.

19.   For example, headaches and colds are very variable and virtually all disappear even without treatment.

20.   Although the FCC ordered Fletcher to stop and tried to fine him, as did state agencies, he has disappeared without facing any penalty, the investigators said.