< 250 words 251 - 500 words 501 - 1,000 words 1,000 - 2,500 words 2,501 - 3,500 words 3,501 - 4,500 words 4,501 - 6,000 words 6,000 - 7,500 words 7,501 - 9,000 words 9,001 - 12,500 words 12,501 - 16,500 words