diddling diffring dilluing dindigul dingding dingdung dingling diningin drilling drillrig drudging drugging fiddling figuring filingin findling flidging flinging fluffing fridging frigging frilling fringing frugging fuddling fundulid furifuff furifuri furulund giggling girdling gliffing glugging gridding grilling grinding grinning grudging gruffing gruffudd grufling guddling gudugudu guggling guidguid guidling guilding gurgling i-ii-iii igilgili illuding illuring induring infiling infini-d inlining inurning iridinid iriguini lingling linguini lingulid lufilufi lugdunin ndulungu nginduri ngunguru niggling nin-ildu ningning nuddling nurdling rdgldgrn riddling ridgling riffling riggling rigi-dig ringding ringgrin ringling ruddling ruffling rugining rundling ulugulli unfiling ungluing unlining