boffo obffo bfofo fbofo ofbfo fobfo boffo obffo bfofo fbofo ofbfo fobfo bffoo fbfoo bffoo fbfoo ffboo ffboo offbo fofbo offbo fofbo ffobo ffobo bofof obfof bfoof fboof ofbof fobof booff oboff booff oboff oobff oobff bfoof fboof bofof obfof fobof ofbof ofobf foobf oofbf oofbf foobf ofobf bofof obfof bfoof fboof ofbof fobof booff oboff booff oboff oobff oobff bfoof fboof bofof obfof fobof ofbof ofobf foobf oofbf oofbf foobf ofobf bffoo fbfoo bffoo fbfoo ffboo ffboo bfofo fbofo boffo obffo fobfo ofbfo bfofo fbofo boffo obffo fobfo ofbfo ffobo ffobo fofbo offbo fofbo offbo offob fofob offob fofob ffoob ffoob ofofb foofb ooffb ooffb foofb ofofb ofofb foofb ooffb ooffb foofb ofofb ffoob ffoob fofob offob fofob offob
Note: these 'words' (valid or invalid) are all the permutations of the word boffo. These words are obtained by scrambling the letters in boffo.