-ing gggg ggrn ggss gigg gigi gign gigs giis ging gini ginn gins gipi gipp gips girg giri girn girr girs giss gnin gnip gnps gnrr gpgp gpip gprp gprs gpsg gpsi gpss grig grin grip gris grni grps grrr grrs grss gsis iggs igis igni igns igri igsp iiii iiis iirs iisi iisp iisr ings inig inis inni innr inns inp- inpi inpp inri inrs insp inss ipin ippr ipri ipsi ipsp ipss irgs iri- irig irin irip iris irps irri irrs irsg irsp isin isis ispr isps isrg isri isrp issi issp issr isss n-ii ngns ngri ngsn nigg nigs niip niir ning nini nins nipr nips nirs nisi nisp niss nngn nnnn nnpi nnpr nnss npin npri npss nrpn nrps nrsp nsin nsis nsnr nspi nsps nssp nssr nsss pgss pigg pign pigp pigs piip ping pini pinn pinp pins pipi pipp pips pirg piri pirn pirr pirs pisg pisi piss pnin pnpp ppgi ppig pppn pppp ppps ppss prgs pri- prig prii prin pris prnp prps prri prrs prsi prss psgi psgr psip psis psni psnr pspi pspp pspr psps psrp rigg rigi rigs riin riis ring rinn ripi ripp ripr rips riri rirs risi risp riss rngs rnin rnsp rpgs rpii rppn rpps rrrr rrsp rsis rsnn rsnr rsps s-ii sggg sggs sgps sgss sigg sigi sign sigs sing sini sinn sinp sins sipi sipp sips siri sirp sirr sirs sisi siss snig snip snir snns snpg snpp snrs spig spin spip spir spis spns spps spri sprs spsp spss sris srni srnn srps srsp ssgs ssin ssis ssns ssps ssrg ssri ssrs sssi ssss