11.   Below all these strata lay the immemorial peasant base of straight barter and the still-important tax in kind.

12.   Blacks and certain other ethnic minority groups form the base of the stratification system.

13.   Both groups had d power base of expertise.

14.   Both sexes have a small black spot in the midline at the base of the tail stalk.

15.   But if the principal base of lunar operations is in the equatorial region, the attractiveness of polar ice is greatly diminished.

16.   But next morning I was shovelling away anew, soon to discover the concrete base of the original pool.

17.   But what was it that Saint-Mames held cupped in his gentle hands, locked together at the base of his torso?

18.   Changes in the economic base of society determine shifts in the political and legal superstructure.

19.   Companies that use refund coupons are now developing a huge data base of information on consumer preferences, Wright says.

20.   Crews erected metal posts around the base of the audio tower, where a satchel containing the bomb had been left.