err, it seems you messed both, this time,, :D
this one should be started with O instead of Q,,
http://www.anime-sharing.com/forum/spam-section-13/last-letter-game-anime-v1-4618/index44.html#post76314
and this one should be started with BS or MB if BS was impossible,,
http://www.anime-sharing.com/forum/spam-section-13/two-last-letters-game-136/index451.html#post76311
[-_-]
this one should be started with O instead of Q,,
http://www.anime-sharing.com/forum/spam-section-13/last-letter-game-anime-v1-4618/index44.html#post76314
and this one should be started with BS or MB if BS was impossible,,
http://www.anime-sharing.com/forum/spam-section-13/two-last-letters-game-136/index451.html#post76311
[-_-]