1.   Beverley was a tougher nut to crack.

2.   Tax will be an even tougher nut.

3.   Financial services will be a tougher nut to crack.

4.   Namesake, however, is a tougher nut.

5.   Otto is a tougher nut.

6.   Smith, however, is clearly the tougher nut to crack, having opposed the North American Free Trade Agreement with Canada and Mexico four years ago.

7.   But sonar-loaded submarine drones are a much tougher nut to crack than their flying cousins, operated remotely by pilots with a joystick and computer terminal.

8.   He said Chang was in some ways a tougher nut to crack.

9.   But Jones warned France would be a tougher nut to crack next week.