-ing dddd ddps ddss ddts dgsi dgsn didi dids digg digi digs diii diis din- ding dini dinn dins dint dipn dipp dips dipt dird dirr dirs dirt dis- disd disg disi disp diss dist diti dits ditt dnis dntp dntt dpdt dpin dpni dprg dpsd dpst dpts drgs drin drip drit drrs drsp dsdp dsdr dsgn dsip dsng dsps dspt dsri dsrp dsrr dssi dssn dssp dsst dstn dsts dtdp dtng dtss dttp gdps gdrt gggg ggrn ggss gidd gidi gids gigg gigi gign gigs giis ging gini ginn gins gipi gipp gips gird girg giri girn girr girs girt gisd giss gist gits gnin gnip gnit gnps gnrr gnti gntp gpgp gpip gprd gprp gprs gpsd gpsg gpsi gpss grds grid grig grin grip gris grit grni grps grrr grrs grss gsds gsis gspt gstr gtip idid idig idin idir idis idps idss idtp idts iggs igis igni igns igri igsp iiii iiis iiit iirs iisd iisi iisp iisr iist iitr iitt ind- indi inds ings inid inig inis init inni innr inns inp- inpi inpp inpt inri inrs insp inss inst intd intg inti intn intp intr ints ipdi ipid ipin ippr ipri ipsi ipsp ipss ipts irdp irds irgs iri- irid irig irin irip iris irps irri irrs irsg irsp irti irtp irts isdn isds isin isis isit isnt ispr isps isrg isri isrp issi issp issr isss istd isti istp istr ists itgs itin itis itri itrs itsi itsp n-ii ndnp ndnt ndpd ndpr ndps ndri ndsi ndss ngns ngri ngsn ngtn ngts nidd nidi nids nigg nigs nigt niip niir niit nind ning nini nins nipr nips nipt nirs nirt nisd nisi nisp niss nist niti nitr nits nngn nnit nnnn nnpi nnpr nnss nntn npin nppd npri nprt npss nptn nrds nrpn nrps nrrd nrsp nrts nsdg nsds nsdt nsin nsis nsnr nspi nsps nsrd nssp nssr nsss nstd nstp nsts ntds ntis ntnd ntpd ntss nttr pdns pdpn pdpr pdrs pdsd pdss pgdn pgds pgss pids pigg pign pigp pigs pigt piip pind ping pini pinn pinp pins pint pipi pipp pips pirg piri pirn pirr pirs pisd pisg pisi piss pist piti pitr pits pitt pnin pnpp pntd pntr ppds ppgi ppid ppig pppd pppn pppp ppps ppss pptn ppts pptt prgs pri- prid prig prii prin pris prnd prnp prpd prps prrd prri prrs prsd prsi prss prti prtp prtr psdi psdp psdr psds psgi psgr psid psip psis psni psnr pspi pspp pspr psps psrd psrp psst psts ptgs ptpd ptrd ptsd rdgs rgds rgit rgtr rgts ridd ridi rids rigg rigi rigs riin riis rind ring rinn ripd ripi ripp ripr rips ript riri rirs risd risi risp riss rist riti rits ritt rndp rnds rngs rnin rnnt rnsp rntd rntp rpdp rpgs rpii rppn rpps rptd rptn rpts rrrr rrsp rsdd rsdg rsds rsid rsis rsnn rsnr rsps rstp rsts rtdt rtgs rtnd rtns rtps rtss rttp rtts s-ii sdds sdgs sdpr sdps sdrs sdss sggg sggs sgps sgsd sgss sgts sidd sidi sidr sids sigd sigg sigi sign sigs siit sind sing sini sinn sinp sins sint sipi sipp sips sipt siri sirp sirr sirs sirt sisd sisi siss sist sit- sitd siti sitn sits sitt snid snig snip snir snit snns snpg snpp snrs snsd sntr spdp spdr spdt spgt spig spin spip spir spis spit spns sppd spps sprd spri sprs spsd spsp spss spst sptr spts sris srni srnn srps srpt srsd srsp srtp srtr ssdd ssdp ssgs ssgt ssid ssin ssis ssit ssns ssps sspt ssrg ssri ssrs sssi ssss sstd sstp ssts stds stgr stid stig stip stir stis stit stnd stng stnn stnr stns stpd stpp stps strd stri strn strs stsi stss sttd sttr tdis tdri tdss tgts tidd tids tigi tigr tigs tiit tind ting tini tinn tins tint tip- tipi tipp tips tipt tird tiri tirr tirs tisi tiss tist titi titp tits titt tndd tngs tnsp tnts tpir tppd tppp tppr tprs tptp tptr tri- trig trin trip tris trit trng trpg trpn trpp trps trsd trsi trst trtr tsgt tsid tsig tsin tsis tspn tsps tspt tssg tssi tssr tsst tsts ttss tttt