Scrabble facts, pt. 1

There 272,013 words in my SOWPODS list, a list for international Scrabble tournaments (that is also used for the Facebook program where I do my boggling).  All, but 4,262 are fifteen letters or less—the maximum length to fit on a Scrabble board—but not all of the rest can conceivably be played in a game of Scrabble.  18 of them, for instance cannot be formed because, even with the blank tiles, there won’t be enough of a certain letter.  Here they are:

• bezzazz
• bezzazzes
• classlessnesses
• knickknack
• knickknacks
• pazzazz
• pazzazzes
• pizzazz
• pizzazzes
• pizzazzy
• possessednesses
• razzamatazz
• razzamatazzes
• razzmatazz
• razzmatazzes
• senselessnesses
• stresslessness
• successlessness