INFRASOUND

ad ai an ar as do fa id if in is na no nu od of oi on or os si so un us

ado ads aid ain air ais and ani arf ars dan dif din dis don dor dos dui dun duo fad fan far fas fid fin fir fon for fou fro fud fun fur ids ifs inn ins ion nan nod nor nos nun nus oaf oar oda ods ons ora ors oud our rad rai ran ras ria rid rif rin rod run sad sau sin sir sod son sou sri sun udo uns urd urn

ados aids ains airn airs ands anis anon anus arfs arid dais dans darn difs dino dins dona dons dors dour duns duos dura durn duro fado fads fain fair fano fans fard faro faun fiar fido fids find fino fins firn firs foin fond fons fora ford four fuds fund funs furs info inns inro ions iron naif nans naoi naos nard nodi nods noir nona nori noun nous nuns nurd oafs oars odas onus orad osar ouds ours rads raid rain rais rand rani rias rids rifs rind rins road roan rods ruin runs sadi said sain sand sard sari soar soda sofa sora sord sori sorn sour sunn sura surd surf udon udos unai undo urds urns ursa