biped ibped bpied pbied ipbed pibed biepd ibepd beipd ebipd iebpd eibpd bpeid pbeid bepid ebpid pebid epbid ipebd piebd iepbd eipbd peibd epibd bipde ibpde bpide pbide ipbde pibde bidpe ibdpe bdipe dbipe idbpe dibpe bpdie pbdie bdpie dbpie pdbie dpbie ipdbe pidbe idpbe dipbe pdibe dpibe biedp ibedp beidp ebidp iebdp eibdp bidep ibdep bdiep dbiep idbep dibep bedip ebdip bdeip dbeip edbip debip iedbp eidbp idebp diebp edibp deibp bpedi pbedi bepdi ebpdi pebdi epbdi bpdei pbdei bdpei dbpei pdbei dpbei bedpi ebdpi bdepi dbepi edbpi debpi pedbi epdbi pdebi dpebi edpbi depbi ipedb piedb iepdb eipdb peidb epidb ipdeb pideb idpeb dipeb pdieb dpieb iedpb eidpb idepb diepb edipb deipb pedib epdib pdeib dpeib edpib depib
Note: these 'words' (valid or invalid) are all the permutations of the word biped. These words are obtained by scrambling the letters in biped.