It might be faster to use oclvanitygen and a file dump but I think the file would become extremely large.
oclvanitygen needs about 1 second to start up, which makes it slower than vanitygen for short strings.140,000 addresses was just 17 MB, so it's not a limitation.
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Maybe we need a rare private key thread? I've noticed some cool things in private keys as well 
Make one and link it here 
The only problem is, once you do, the key is worthless.My computer is still searching for matches from my 25000 words in the 140000 addresses. No match yet. I am only searching for long words.
A manual search for short words:
Address: 1234FU3xLWm16vCT2DTqxNsfa7mVsBMV4k
Privkey: 5KWZ8XRhBabynoSiyBSQVX6pi8yLQVhm1chHEnwPJ9je83gqJ6x
Address: 1234Xqmtkg1VtsDmtxV2HgFtJJMQanwEVR
Privkey: 5JoDFeZgv5DHRi6BfYDksqqUaddymetEw2mA17aLxXDYaRxZu9W
Address: 1234LVxMembBRbSAXQC1WaYEUuBJsEgHpm
Privkey: 5JsSRhEmBTCLoARm9vX4f8Y4E5FTeWrrL2MJbwDZyp15a5cneZo
Address: 12344F1FSq6X2RRHagCcC3znT5dZqLhXXw
Privkey: 5KgpGTALK3ax9Tn2ozEXMMnbTcBtkTCBdtpZ4pRm2mia4YQCnE4
Address: 1234Lr964TRmcyYWqMoi1R3QbKu8P1Wb6q
Privkey: 5JysendjjYyGp6zeDkT8CgZDF6ohRD3krz1Ei81br5wHJKq1Bzt
Timelord, for a challenge, how about finding a vanity addy with the prefix somewhere in the private key? This is the best I've got:
Address: 1234QDTHDK8SBviuurjoLrHMvwjZJ5oAMK
Privkey: 5Hs1236P51isqzteRFsGt2C6mXX99wr2ccc3k5WtyvSM7SmPnaL