-ing bbbb bbbs bbin bbng bbpr bbrg bggs bibb bibi bibs bigb bigg bign bigs biin biis bin- bing bini binn bins bipp bips birb birg biri birn birr birs bis- bisp biss bnib bnin bnpp bnrr bnss brig brin bris brns brrr brrs brsb brsr bsgs bsin bsns bspp bspr gbbs gggg ggrn ggss gibb gibs gigg gigi gign gigs giis ging gini ginn gins gipi gipp gips girg giri girn girr girs giss gnib gnin gnip gnps gnrr gpgp gpip gprp gprs gpsg gpsi gpss grbr grib grig grin grip gris grni grps grrr grrs grss gsis ibis ibns ibri ibsn ibss 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 irbp irgs iri- irig irin irip iris irps irri irrs irsg irsp isbn isin isis ispr isps isrg isri isrp issi issp issr isss n-ii nbpp nbps nbsp ngns ngri ngsn nibi nibs 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 nssb nssp nssr nsss pbrs pbsp pgib pgss pibb pibi pigb pigg pign pigp pigs piip ping pini pinn pinp pins pipi pipp pips pirg piri pirn pirr pirs pisg pisi piss pnin pnpp ppgi ppib ppig pppn pppp ppps ppss prbs prgs pri- prig prii prin pris prnp prps prri prrs prsi prss psbr psgi psgr psip psis psni psnr pspi pspp pspr psps psrp rbbb rbbr rbbs rbis rbsp rbss rgbi rib- ribs rigg rigi rigs riin riis ring rinn ripi ripp ripr rips riri rirs risi risp riss rnbr rngs rnin rnsp rpgs rpii rppn rpps rrrr rrsp rsbi rsgb rsis rsnn rsnr rspb rsps s-ib s-ii sbbs sbig sbsi sbsp sggg sggs sgps sgss sibi sibs sigg sigi sign sigs sing sini sinn sinp sins sipi sipp sips siri sirp sirr sirs sisi siss snib snig snip snir snns snpg snpp snrs spgb spib spig spin spip spir spis spns spps spri sprs spsp spss srgb srib sris srni srnn srps srsp ssbn ssbr ssgs ssin ssis ssns ssps ssrg ssri ssrs sssb sssi ssss