Cubicity for Desura

Hi everyone
Here are some keys for desura.
They are all Cubicity.
Please comment if you've redeemed any key.

Keys:
OGNK6-N2OQJ-NT1P3-0S9XF-NWAF? ( ? = First number in Mathematics )
OLWP?-QWLN8-RZ7HK-IKPM7-DIFFU ( ? = Last letter in the Alphabet )
OGQ7O-15HND-XE8W?-URSJ2-7NODS ( ? = Windows released in 2009 )
OLWGW-BL9KO-JJY2I-WMK7B-GMI?J ( ? = Two Plus Two )
OGN??-VK22O-2EG6T-6GRQG-R2M4K ( ?? = Error 37 )
OM1DI-S3U6P-G6AGM-Q9RZ7-Y??81 ( ?? = Monitor for console peasants box )
OLYLB-4FN4A-Z38??-H72II-0A0RK ( ?? = Code for AMD newest Graphic Cards )
OLWFV-1W?S3-3PWJ9-W01NT-P5F79 ( ? = Before Y comes )
OGQJY-8JJ4A-65??G-YX2HZ-6QHVK ( ?? = Bloody Fighting game seriers )
OLVEV-G6G8P-65T7Q-GSGDD-P28X? ( ? = After G comes )