-ing dddd ddps ddss dgsi dgsn didi dids didu digg digi digs diii diis din- ding dini dinn dins dinu dipn dipp dips dipu dird dirr dirs dis- disd disg disi disp diss dius dnis dnus dpin dpni dprg dpsd dpsu drgs drin drip drrs drsp drug drui drup drus druu dsdp dsdr dsgn dsip dsng dsps dsri dsrp dsrr dssi dssn dssp dudd duds dudu dugs dugu duid duin duir duis dung dunn duns durg duri durn duru dusi duur gdps gggg ggrn ggss gidd gidi gids gigg gigi gign gigs giis ging gini ginn gins ginu gipi gipp gips gird girg giri girn girr girs giru gisd giss giur gius gnin gnip gnps gnrr gnus gpgp gpip gprd gprp gprs gpsd gpsg gpsi gpss grds grid grig grin grip gris grni grps grrr grrs grss grug grui grun grur grus gsds gsis gsur gudi gudu gugg gugi gugu guid guin guis gund gung gunn guns gups gurd gurg guri gurn gurr gurs guru gusd guss guus idid idig idin idir idis idps idss idun idus iggs igis igni igns ignu igri igsp igus iiii iiis iirs iisd iisi iisp iisr iisu ind- indi inds indu ings inid inig inis inni innr inns innu inp- inpi inpp inri inrs insp inss insu inui inun inup inus ipdi ipid ipin ippr ipri ipsi ipsp ipss ipur ipus irdp irds irgs iri- irid irig irin irip iris irps irri irrs irsg irsp irun irus isdn isds isin isis ispr isps isrg isri isrp issi issp issr isss issu isup isus iuds iugs iuiu iupp iusd iuss n-ii n-up ndnp ndpd ndpr ndps ndri ndsi ndss ngns ngri ngsn ngur nguu nidd nidi nids nigg nigs niip niir niiu nind ning nini nins nipr nips nirs niru nisd nisi nisp niss nisu niur nngn nnnn nnpi nnpr nnss npin nppd npri npss nrds nrpn nrps nrrd nrsp nsdg nsds nsin nsis nsnr nspi nsps nsrd nssp nssr nsss nudd nudi nugs nuin nung nunn nuns nups nurd nuri nurn nurp nurr nurs nuru nusi nuss nusu pdns pdpn pdpr pdrs pdsd pdss pgdn pgds pgpu pgss pgup pids pigg pign pigp pigs pigu piip pind ping pini pinn pinp pins pinu pipi pipp pips pirg piri pirn pirr pirs piru pisd pisg pisi piss pisu pius pnin pnpp pnup ppds ppgi ppid ppig pppd pppn pppp ppps ppru ppss ppur prgs pri- prid prig prii prin pris prnd prnp prpd prps prrd prri prrs prsd prsi prss prud prus pruu psdi psdp psdr psds psgi psgr psid psip psis psni psnr pspi pspp pspr psps psrd psrp puds pudu pugs pugu puid puig puin puir puis puiu pund pung puns punu pupi pups pupu pur- purg puri purp purr purs puru pusd pusi puss rdgs rgds ridd ridi rids rigg rigi rigs rigu riin riis rind ring rinn ripd ripi ripp ripr rips riri rirs risd risi risp riss risu rius rndp rnds rngs rnin rnsp rpdp rpgs rpii rppn rpps rrrr rrsp rrun rsdd rsdg rsds rsid rsis rsnn rsnr rsps rudd rudi rudp ruds rugg rugi rugs ruid ruin ruis rund rung runi runn runs rupp rurd ruri rurp rurs ruru rusi russ rusu ruud ruun s-ii sdds sdgs sdpr sdps sdrs sdss sdsu sggg sggs sgps sgsd sgss sidd sidi sidr sids sigd sigg sigi sign sigs sind sing sini sinn sinp sins sinu sipi sipp sips siri sirp sirr sirs siru sisd sisi siss sisu siui sius snid snig snip snir snns snpg snpp snrs snsd snug snur snus spdp spdr spig spin spip spir spis spns sppd spps sprd spri sprs spsd spsp spss spud spug spui spun spur spus sris srni srnn srps srsd srsp ssdd ssdp ssgs ssid ssin ssis ssns ssps ssrg ssri ssrs sssi ssss sudd sudi suds sug- sugg sugi suid suig suin suir suis sun- sund sung suni sunn suns sunu sup- supp supr sups sur- surd surg suri surn surp surr surs suru sus- susd susi susp suss susu suus u-rp uddi udds udid udig udin udir udpd udsd udun uggs ugis ugni ugri ugur uguu uipi uirr uisd undi unds ungp ungu uni- unii unin unir unis unni unns unps unrs uns- unsg unus upin upis upnp uppp uppu upri upsi upup urds urdu urgi urgu urin uris uriu urni urns urri ursi urss ursu urun urup urur urus usdp usds usgp usin usip usis usnr usnu uspp usps ussr usss ussu usui usun usus uuni uuri uusi uuuu