21.  The yard must be full of water, the first probing lines running ahead of the oncoming battalions and bringing their debris.

22.  Safe working practices and procedures are the first line of defence against exposure to hepatitis B infection, but vaccination is essential to protect workers who are at risk.

23.  The first line of defence for the trade union movement is you.

24.  The first line is mandatory.

25.  This column displays the title of the mail message, constructed from the first line of the message.