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Such exercises are conducted mostly during working of case forms of nouns, ...... 
dull by nature, tries to substitute his natural dull wits by diligence? [cit: 8, p.190].							
Such exercises are conducted mostly during working of case forms of nouns, ...... 
dull by nature, tries to substitute his natural dull wits by diligence? [cit: 8, p.190].