CHICAGO (AP) _ Grain futures were lower in early trading Friday on the Chicago Board of Trade. Dec. corn was down 0.25 cent at $4.42 a bushel. Dec. wheat fell by 1.5 cents at $5.83 a bushel. Dec. oats was down 1.5 cents at $3.50 a bushel. Nov. soybeans was off 4.5 cents at $12.22...