-ing bbbb bbfn bbin bbng bbrg bfgf bftt bgun bibb bibi biff bifi bigb bigg bign bigt bigu biin bin- bing bini binn bint binu birb birg biri birn birr birt biru bitt bitu bnib bnin bnrr brfu brig brin brit brrr brug brun brut btrt bttb bubb bubi bubu buff bufr bugg bugi buif buin buir buit buiu bunb bung buni bunn bunt bunu bur- burb burg buri burn burr burt buru but- buti butt ffff ffii ffrr fftf ffun fiff fifi fift figg fiii fing fini finn fint firn fiti fitt fntb fnuf frib frig frin frit frub frug frun ftii ftub fubb fubu fuff fufu fugi fugu fuig fuir fuit funf fung funt fur- furg furi furn furr furt futi futu ggbt ggfg gggg ggrn gibb giff gift gifu gigg gigi gign ging gini ginn ginu girg giri girn girr girt giru giur gnib gnin gnit gnrr gnti grbr grib grif grig grin grit grni grrr grub gruf grug grui grun grur grut gtbr gubb gubi gubu guff gugb gugg gugi gugu guib guin gung gunn gunt gurb gurg guri gurn gurr gurt guru guti gutt gutu ibfi ibri ibtb ifbb ifit ifni ifnr ifrb ifrf ifri iftn igni ignu igri iiii iiit iitr iitt infi inig init inni innr innu inri intg inti intn intr intu inui inun irfu iri- irig irin irri irtf irti irun itif itin itrf itri ittf itur iuiu n-ii nbti nbuf nfff nfib ngri ngtn ngur nguu nibi niff nift nigg nigt niir niit niiu ning nini nirt niru nitb nitf niti nitr niur nngn nnit nnnn nntn ntnu ntru nttr ntui nubi nuff nuin nuit nung nunn nunt nuri nurn nurr nurt nuru nutt nutu rbbb rbbr rgbi rgit rgtr rib- ribu riff rift rifu rigg rigi rigu riif riin rinf ring rinn riri riti ritt ritu rnbr rnin rnnt rnut rrif rrrr rrun rtbf rtfb rubb rubi rubu ruff ruft rugg rugi ruif ruin ruit runf rung runi runn runt ruri ruru ruti rutt rutu ruun tbit tbnf tbrb tfin tgif tibi tibu tiff tift tigi tigr tiit tiiu ting tini tinn tint tinu tirb tiri tirr tiru titi titt titu tnut trfr tri- trib trif trig trin trit trng trtr trub trug trun trut truu ttbb ttff ttfn tttt tubb tubr tubu tuff tufi tuft tufu tugg tugu tuig tuin tuit tuiu tunb tung tuni tunn tunu turb turf turg turi turn turr turt turu tuti tutt tutu ubbi ubii ubir ubit ubtf uggt ugni ugri ugur uguu uint uirr ungu uni- unif unii unin unir unit unni unrf untb unut urbi urff urfi urft urgi urgu urib urif urin uriu urni urri urun urur urut utin utri utti uttu utug uuni uuri uutf uuuu