-ing gggg ggrn ggss gigg gigi gign gigs giis ging gini ginn gins gipi gipp gips girg giri girn girr girs girt giss gist gits gnin gnip gnit gnps gnrr gnti gntp gpgp gpip gprp gprs gpsg gpsi gpss grig grin grip gris grit grni grps grrr grrs grss gsis gspt gstr gtip iggs igis igni igns igri igsp iiii iiis iiit iirs iisi iisp iisr iist iitr iitt ings inig inis init inni innr inns inp- inpi inpp inpt inri inrs insp inss inst intg inti intn intp intr ints ipin ippr ipri ipsi ipsp ipss ipts irgs iri- irig irin irip iris irps irri irrs irsg irsp irti irtp irts isin isis isit isnt ispr isps isrg isri isrp issi issp issr isss isti istp istr ists itgs itin itis itri itrs itsi itsp n-ii ngns ngri ngsn ngtn ngts nigg nigs nigt niip niir niit ning nini nins nipr nips nipt nirs nirt nisi nisp niss nist niti nitr nits nngn nnit nnnn nnpi nnpr nnss nntn npin npri nprt npss nptn nrpn nrps nrsp nrts nsin nsis nsnr nspi nsps nssp nssr nsss nstp nsts ntis ntss nttr pgss pigg pign pigp pigs pigt piip ping pini pinn pinp pins pint pipi pipp pips pirg piri pirn pirr pirs pisg pisi piss pist piti pitr pits pitt pnin pnpp pntr ppgi ppig pppn pppp ppps ppss pptn ppts pptt prgs pri- prig prii prin pris prnp prps prri prrs prsi prss prti prtp prtr psgi psgr psip psis psni psnr pspi pspp pspr psps psrp psst psts ptgs rgit rgtr rgts rigg rigi rigs riin riis ring rinn ripi ripp ripr rips ript riri rirs risi risp riss rist riti rits ritt rngs rnin rnnt rnsp rntp rpgs rpii rppn rpps rptn rpts rrrr rrsp rsis rsnn rsnr rsps rstp rsts rtgs rtns rtps rtss rttp rtts s-ii sggg sggs sgps sgss sgts sigg sigi sign sigs siit sing sini sinn sinp sins sint sipi sipp sips sipt siri sirp sirr sirs sirt sisi siss sist sit- siti sitn sits sitt snig snip snir snit snns snpg snpp snrs sntr spgt spig spin spip spir spis spit spns spps spri sprs spsp spss spst sptr spts sris srni srnn srps srpt srsp srtp srtr ssgs ssgt ssin ssis ssit ssns ssps sspt ssrg ssri ssrs sssi ssss sstp ssts stgr stig stip stir stis stit stng stnn stnr stns stpp stps stri strn strs stsi stss sttr tgts tigi tigr tigs tiit ting tini tinn tins tint tip- tipi tipp tips tipt tiri tirr tirs tisi tiss tist titi titp tits titt tngs tnsp tnts tpir tppp tppr tprs tptp tptr tri- trig trin trip tris trit trng trpg trpn trpp trps trsi trst trtr tsgt tsig tsin tsis tspn tsps tspt tssg tssi tssr tsst tsts ttss tttt