21.   The recent letters have been almost chatty, even complaining mildly about how hard it is to avoid leaving clues such as fingerprints.

22.   The thieves left few clues other than two empty vans and a pistol dropped on the tarmac.

23.   They told other kids, aired their grievances and otherwise left clues that could have prevented the attacks.

24.   Using a string of aliases, he then hopscotched the globe, leaving clues of unsuccessful bombing attacks allegedly planned for the Philippines and Thailand.

25.   Yet the British author never traveled to the region and left few clues about his inspiration.

26.   Investigators said the attackers left no clues as to their identity or the motivation for the attack.

27.   Only a statue of the Virgin Mary and another of Joan of Arc were untouched by the vandals who left no clues of their identities.

28.   Police said the bombers left no clue to their identity.

29.   Police said the arsonists left no clues as to their identity.

30.   The computer savvy group was known to businessmen here as extremely computer literate, hardworking people who left few clues about their past, whereabouts or religious beliefs.