ovoid vooid oovid oovid vooid ovoid oviod voiod oivod iovod viood ivood ooivd ooivd oiovd ioovd oiovd ioovd voiod oviod viood ivood oivod iovod ovodi voodi oovdi oovdi voodi ovodi ovdoi vodoi odvoi dovoi vdooi dvooi oodvi oodvi odovi doovi odovi doovi vodoi ovdoi vdooi dvooi odvoi dovoi ovido voido oivdo iovdo viodo ivodo ovdio vodio odvio dovio vdoio dvoio oidvo iodvo odivo doivo idovo diovo vidoo ivdoo vdioo dvioo idvoo divoo ooidv ooidv oiodv ioodv oiodv ioodv oodiv oodiv odoiv dooiv odoiv dooiv oidov iodov odiov doiov idoov dioov oidov iodov odiov doiov idoov dioov voido ovido viodo ivodo oivdo iovdo vodio ovdio vdoio dvoio odvio dovio vidoo ivdoo vdioo dvioo idvoo divoo oidvo iodvo odivo doivo idovo diovo
Note: these 'words' (valid or invalid) are all the permutations of the word ovoid. These words are obtained by scrambling the letters in ovoid.