11.   Okay, so you could do this one, erm, six hundred plus forty seven point eight, point five per cent.

12.   Okay, so do that one any way you like.

13.   And forty five degrees is one, try it, try it, do that one again with forty degrees.

14.   The trouble is that most people do one once they have achieved the other.

15.   Which one are you doing?

16.   But I should do each one as you come to it.

17.   And he actually got that one done.

18.   Do you want to do one now?

19.   Has she done one today?