21.  The technology uses steam pumped underground to force oil up from an area already exploited by conventional means.

22.  This style of painting incorporates conventional means to achieve fantastical ends.

23.  To grow far faster than it is possible by conventional means through acentralised organisation.

24.  While the terrorists lack the kind of military forces and bases that could be attacked by conventional means, nations that support or harbor them do, Rumsfeld said.