di-iod- didymo- difform dihydr- dihydro diiodo- diriomo dodford doo-doo doofoid doridid dorohoi dromiid dyhy-fm f-droid ffmmrrd fiormor firmify foddhoo fomorii foo-foo foodoir formido h-m-d h-r-m hidfrom homdrom homoio- homorod hoo-hoo horford horrify hryhory hydrido hydroid iridio- iridoid iry-hor mid-off midford midriff mirrory moo-moo moodoid morfydd moriori myrhorr off-off offform ohrdorf oidioid ommoord omomyid oriform ormyrid r-h-m rddhi riodoro romford roomfor yomyomf yoo-hoo yoomiii yor-yor