-ing dddd ddss dfds dfrf dfri dgsi dgsn didi dids didu dif- diff difs digg digi digs diii diis din- ding dini dinn dins dinu dird dirr dirs dis- disd disg disi diss dius dnis dnus drgs drif drin drrs drug drui drus druu dsdr dsgn dsif dsng dsri dsrr dssi dssn dudd duds dudu duff dufu dugs dugu duid duif duin duir duis dung dunn duns durg duri durn duru dusi duur ffff ffii ffrr ffss ffun fidf fids fiff fifi figg figs fiii find fing fini finn fins firn firs fisd fisi fiss fisu fndd fndg fndn fndr fnrs fnuf frid frig frin fris frns frug frun fsfi fsgs fssf fudd fudi fuff fufu fugi fugs fugu fuid fuig fuir fund funf fung funs fur- furg furi furn furr furs fusd fusi fuss fusu gdfr gdnf ggfg gggg ggrn ggss gidd gidi gids giff gifs gifu gigg gigi gign gigs giis ging gini ginn gins ginu gird girg giri girn girr girs giru gisd giss giur gius gnin gnrr gnus grds grid grif grig grin gris grni grrr grrs grss gruf grug grui grun grur grus gsds gsif gsis gsur gudi gudu guff gugg gugi gugu guid guin guis gund gung gunn guns gurd gurg guri gurn gurr gurs guru gusd guss guus idgf idid idig idin idir idis idrf idsf idss idun idus ifid ifis ifni ifnr ifns ifrf ifri iggs igis igni igns ignu igri igus iiii iiis iirs iisd iisi iisr iisu ind- indi inds indu infi infs ings inid inig inis inni innr inns innu inri inrs inss insu inui inun inus irds irfu irgs iri- irid irig irin iris irri irrs irsf irsg irun irus isdn isds isin isis isrg isri issf issi issr isss issu isus iuds iugs iuiu iusd iuss n-ii ndfi ndrf ndri ndsf ndsi ndss nfff nfrs nfsr nfsu ngfs ngns ngri ngsn ngur nguu nidd nidi nids niff nigg nigs niir niiu nind ning nini nins nirs niru nisd nisi niss nisu niur nngn nnnn nnss nrds nrrd nsdf nsdg nsds nsfs nsin nsis nsnr nsrd nssf nssr nsss nudd nudi nuff nugs nuin nung nunn nuns nurd nuri nurn nurr nurs nuru nusi nuss nusu rdgs rfdi rfds rfgs rfid rgds ridd ridi rids riff rifs rifu rigg rigi rigs rigu riif riin riis rind rinf ring rinn riri rirs risd risi riss risu rius rndf rnds rngs rnin rrif rrrr rrun rsdd rsdg rsds rsid rsis rsnn rsnr rudd rudi ruds ruff rugg rugi rugs ruid ruif ruin ruis rund runf rung runi runn runs rurd ruri rurs ruru rusi russ rusu ruud ruun s-ii sdds sdgs sdif sdrs sdsf sdss sdsu sfss sfsu sggg sggs sgsd sgss sidd sidi sidr sids siff sifr sifu sigd sigg sigi sign sigs sind sing sini sinn sins sinu sirf siri sirr sirs siru sisd sisi siss sisu siui sius snfu snid snig snir snns snrs snsd snug snur snus srfi sris srni srnn srsd ssdd ssdf ssgs ssid ssin ssis ssns ssrg ssri ssrs sssf sssi ssss sudd sudi suds suf- suff sufi sufr sufs sufu sug- sugg sugi suid suig suin suir suis sun- sund sung suni sunn suns sunu sur- surd surf surg suri surn surr surs suru sus- susd susi suss susu suus uddi udds udid udig udin udir udsd udun uggs ugis ugni ugri ugur uguu uirr uisd undi unds unfd ungu uni- unif unii unin unir unis unni unns unrf unrs uns- unsg unus urds urdu urff urfi urgi urgu urif urin uris uriu urni urns urri ursi urss ursu urun urur urus usdf usds usfi usfs usif usin usis usnr usnu ussf ussr usss ussu usui usun usus uuni uuri uusi uuuu