-ing dddd ddps ddss dgsi dgsn didi dids digg digi digs diii diis din- ding dini dinn dins dipn dipp dips dis- disd disg disi disp diss dnis dpin dpni dpsd dsdp dsgn dsip dsng dsps dssi dssn dssp gdps gggg ggss gidd gidi gids gigg gigi gign gigs giis ging gini ginn gins gipi gipp gips gisd giss gnin gnip gnps gpgp gpip gpsd gpsg gpsi gpss gsds gsis idid idig idin idis idps idss iggs igis igni igns igsp iiii iiis iisd iisi iisp ind- indi inds ings inid inig inis inni inns inp- inpi inpp insp inss ipdi ipid ipin ipsi ipsp ipss isdn isds isin isis isps issi issp isss n-ii ndnp ndpd ndps ndsi ndss ngns ngsn nidd nidi nids nigg nigs niip nind ning nini nins nips nisd nisi nisp niss nngn nnnn nnpi nnss npin nppd npss nsdg nsds nsin nsis nspi nsps nssp nsss pdns pdpn pdsd pdss pgdn pgds pgss pids pigg pign pigp pigs piip pind ping pini pinn pinp pins pipi pipp pips pisd pisg pisi piss pnin pnpp ppds ppgi ppid ppig pppd pppn pppp ppps ppss psdi psdp psds psgi psid psip psis psni pspi pspp psps s-ii sdds sdgs sdps sdss sggg sggs sgps sgsd sgss sidd sidi sids sigd sigg sigi sign sigs sind sing sini sinn sinp sins sipi sipp sips sisd sisi siss snid snig snip snns snpg snpp snsd spdp spig spin spip spis spns sppd spps spsd spsp spss ssdd ssdp ssgs ssid ssin ssis ssns ssps sssi ssss