I expect that there are at least millions of solutions. However, he did not write me again about it for twelve years, with an e-mail on Sep 22 1998. Sorry this took so long. And five days later, he announced he had 63 solutions, five of which consisted of words in Webster's 10th Collegiate. A similar scaling argument suggests that a vocabulary of 1200 words would yield, on the average, just one solution.
Solutions are ridiculously easy to find for four three-letter words.
God get bed bar had her lie let see sit Los law how has Los and San appear in Los Angeles and San Francisco, respectively, in the texts Kucera and Francis sampled. I am much indebted to Steve Root for discovering these word groups with the aid of a computer.