11.   His frustration mounted, but his belief in himself never wavered.

12.   I really like to play, but frustration mounts.

13.   Kunda said she feared that frustration was mounting among voters.

14.   The frustration is mounting.

15.   The frustration mounted.

16.   The frustration in the meantime mounts on Capitol Hill.

17.   The frustration is mounting for the Yankees, who cannot get hits these days, cannot score runs, cannot win.

18.   When his frustrations mounted in January, teammates adopted him like a little brother.

19.   When Tyson first returned to sparring several months ago, even he acknowledged his timing was off, and his frustration mounted quickly.

20.   With each new city and fresh defeat, the frustration mounts.