-ing bbbb bbbs bbin bblb bbls bbng bbrg bggs bgst bibb bibi bibl bibs bigb bigg bign bigs bigt biin biis bili bill bils bilt bin- bing bini binn bins bint birb birg biri birl birn birr birs birt bis- bisl biss bist bits bitt blbt blin blir blis blit blls blni blrg blss blst blts bnib bnin bnrr bnss brig bril brin bris brit brls brns brrr brrs brsb brsr brst bsgs bsin bsns bsts btrt btss bttb gbbs ggbt gggg ggrn ggss gibb gibs gigg gigi gign gigs giis gilg gili gill gils gilt ging gini ginn gins girg giri girl girn girr girs girt giss gist gits gli- glib glin glis glit glrb gnib gnin gnit gnrr gnti grbr grib grig gril grin gris grit grni grrl grrr grrs grss gsis gsli gstr gtbr ibis ibns ibri ibsn ibss ibtb ibtl ibts iggs igil igis igli igni igns igri iiii iiis iiit iirs iisi iisr iist iitr iitt ilin ilir ilis ilit ill- illi ills illt ilni ilts ings inig inis init inni innr inns inri inrs inss inst intg inti intl intn intr ints irgs iri- irig iril irin iris irlb irri irrs irsg irti irts isbl isbn isbt isil isin isis isit isls isnt isrg isri issi issr isss isti istr ists itbs itgs itil itin itis itll itri itrs itsi lbgt lblr lbrs lbrt lgbt lgin lgtn lgts libr libs ligg ligi lign liig liii liin liir liis lilb lilg lili lill lils lilt ling linn lins lint lirg liri lirl lirn lirr lirs lirt lisi liss list litb liti litl litr lits litt llbs llll lngs lnts lrgb lrrr lrst lrts ls-r lssr lsts ltbl ltgs ltib ltng ltns ltnt ltrs ltsi ltsr lttr n-ii nbti ngns ngri ngsn ngtn ngts nibi nibs nigg nigs nigt niir niit nili nill nils nilt ning nini ninl nins nirs nirt nisi nisl niss nist nitb niti nitr nits nlgn nlls nlrb nngn nnit nnls nnnn nnsl nnss nntn nrlb nrrl nrtl nrts nsin nsis nslr nsls nsnr nsrl nssb nssr nsss nstl nsts ntis ntrl ntsb ntss nttr rbbb rbbr rbbs rbis rbsl rbss rbst rgbi rgit rgtr rgts rib- ribs rigg rigi rigs riin riis rill ring rinn riri rirs risi riss rist riti ritl rits ritt rlin rlls rnbr rngs rnin rnli rnnt rrrr rsbi rsgb rsis rsnn rsnr rssl rsts rtgs rtls rtlt rtns rtss rtts s-ib s-ii sbbs sbig sbsi sbst sbtn sggg sggs sglr sgls sgnl sgss sgts sibi sibs sigg sigi sign sigs siit sil- sili sill sils silt sing sini sinn sins sint siri sirr sirs sirt sisi siss sist sit- siti sitn sits sitt sl-i slib slig slir slit slln slrn slrs slst slts snib snig snir snit snns snrs sntr srgb srib sris srni srnn srtr ssbn ssbr ssgs ssgt ssin ssis ssit sslt ssns ssrg ssri ssrl ssrs sssb sssi ssss sstb sstl ssts stbs stgr stib stig stil stir stis stit stlg stln stlt stng stnn stnr stns stri strn strs stsi stss sttr tbbs tbgs tbil tbit tbrb tbst tgts tibi tibs tigi tigr tigs tiit till tiln tilr tils tilt ting tini tinn tins tint tirb tiri tirl tirr tirs tisb tisi tiss tist titi tits titt tlli tlrs tngs tnts tri- trib trig tril trin tris trit trng trsi trst trtr tsgt tsig tsin tsis tssg tssi tssr tsst tsts ttbb ttss tttt