11.   He was one of several geologists to whom I sent an image of rocks that were a complete mystery to me.

12.   Ian shows his respect for the family by agreeing to be baptized in the Greek church, even though the language remains a complete mystery to him.

13.   Internal combustion was a complete mystery to my father, so the intended effect of suave insouciance was compromised by episodes of cursing and tire kicking.

14.   It is not tracked in from the garden, and it is a complete mystery to me.

15.   Its name is a complete mystery.

16.   The anthrax remained a complete mystery.

17.   This unfounded fear is a complete mystery to those looking to improve criminal justice in the state of Arizona.

18.   Those whose sex lives were a complete mystery usually led artistic but emotionally empty lives.

19.   While the signs for much of the investigation seem clearly pointed toward New Jersey or Brentwood, the death of the woman in the Bronx remained a complete mystery.

20.   How much it may draw was a complete mystery because no accurate current value could be estimated, Jackson said.