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Rows of spruced up mining cottages line the outskirts of cities such as Dortmund , Duisburg and Essen and have been placed under monument protection along with the steel hulks of pit heads . The second rule scans the elements of used to find all the distinct words that appear in the input . Consumers of manufactured housing have even more limited protections if they finance their home with a personal property loan . A tuning session in which you modify the values of collected data such as disks , memory , CPU , or cardinality to a value you expect will be correct in the future . On the contrary , a Finnish immigrant , whose husband complained to Mrs. Knauer that although she speaks little English she had been coerced into signing for the course by an importunate salesman , was bombarded with dunning letters and telegrams full of implied threats to sue .