Surprised nobody has beat my 11 real word yet lol.
Only took 1 night with two 660 ti's, running about 48Mk/s and a lot of words.
As the number of letters in a word increases the number of available words decreases and the difficulty to find them as a bitcoin address increases exponentially so it's not surprising there are no 12 letter words yet.
It would take about 100 days with your rig and a file of 3000 words for a 50% chance of finding a single case-insensitive match.
This is my 12 letter real word address and I only found this by sheer luck while searching out 8 letter matches.
1
BubbLingsoup9hqv7cjnnrWFt9GmEmCHS
message: xhomerx10 controls the address 1BubbLingsoup9hqv7cjnnrWFt9GmEmCHS
signature: G88+0rJjr5Q0kULSz4BNH93fPpeKuLugfZl0IZtWVGoQOPicNK/dkQ7E5wa3JeFugKjmXgw3sRXCkkCXI2SJn7E=