-ing bbbb bbbs bbin bbng bbrg bggs bibb bibi bibs bigb bigg bign bigs biin biis bin- bing bini binn bins birb birg biri birn birr birs bis- biss bnib bnin bnrr bnss brig brin bris brns brrr brrs brsb brsr bsgs bsin bsns gbbs gggg ggrn ggss gibb gibs gigg gigi gign gigs giis ging gini ginn gins girg giri girn girr girs giss gnib gnin gnrr grbr grib grig grin gris grni grrr grrs grss gsis ibis ibns ibri ibsn ibss iggs igis igni igns igri iiii iiis iirs iisi iisr ings inig inis inni innr inns inri inrs inss irgs iri- irig irin iris irri irrs irsg isbn isin isis isrg isri issi issr isss n-ii ngns ngri ngsn nibi nibs nigg nigs niir ning nini nins nirs nisi niss nngn nnnn nnss nsin nsis nsnr nssb nssr nsss rbbb rbbr rbbs rbis rbss rgbi rib- ribs rigg rigi rigs riin riis ring rinn riri rirs risi riss rnbr rngs rnin rrrr rsbi rsgb rsis rsnn rsnr s-ib s-ii sbbs sbig sbsi sggg sggs sgss sibi sibs sigg sigi sign sigs sing sini sinn sins siri sirr sirs sisi siss snib snig snir snns snrs srgb srib sris srni srnn ssbn ssbr ssgs ssin ssis ssns ssrg ssri ssrs sssb sssi ssss