bbbb bbin bbpr bibb bibi bibo biin bin- bini binn bino bint binu bio- bioi bion biot biou bipp bipu birb biri birn biro birr birt biru bito bitt bitu bnib bnin bnor bnpp bnrr bobb bobi bobo bobu boi- boii boin boit boiu boni bonn bono bont bonu boob boon boop boor boot bopp bor- bori born boro borr bort boru botb boti botn boto bott boun boup bour bout bpot bpti brin brio brit brno brob bron broo bror brot brou brrr brun brup brut btbp btob btor btrt bttb bubb bubi bubo bubu buin buir buit buiu bunb buni bunn buno bunt bunu buon bur- burb buri burn buro burp burr burt buru but- buti buto butt i-no ibon ibot ibri ibro ibtb iiii iiio iiit iino iioi iioo iiop iitr iitt inbo init inni inno innr innu ino- inoi inon inor inot inou inp- inpi inpp inpt inri inro inti intn into intp intr intu inui inun inup iobi ioii ioio ioit ioni ionn iono iooi iooo iori ioto ioun ipin ipop ippo ippr ipri ipto ipur iput irbp iri- irin irio irip irob iron irop irri irti irtp irun itin itno itoi iton itoo itor itou itri itto itup itur iuiu iuno iupp n-ii n-up nbbo nbpp nbti nibi nibo niip niir niit niiu nini nino nion nioo niou nipr nipt niro nirt niru nitb niti nito nitr niur nnit nnnn nnot nnpi nnpr nntn nobi nobo nobu noib noin noio noir noit non- noni nonn nono nont nonu noo- noob noon nooo noop noor noot nor- norb nori norn noro norr nort not- noti noto nott noun noup nour nout npin npri nprt nptn nron nrpn ntnu ntop ntru ntto nttr ntui nubi nuin nuit nunn nuno nunt nuon nuri nurn nurp nurr nurt nuru nutt nutu obbo obin obit oboi obon obor obot obri obro oiii oint oion oirt oiti onir onit onni onno onon onor onpt onpu ont- onti onto onup onur onut oobi oont oooo oort ootb ootp opii opin opio opit opo- opon opor oppi oppo opti optn opto orbb orbi orbo orbu ori- orin orio orit orni orno oro- oron oror orot orpi orri orro orto orub orup otin otit oto- oton otoo otor otpp otro otti otto ottu otur ouii ouin ouir ouit oun- our- ourn ouro ourt out- outb outi outo ouu- pibb pibi piip pini pinn pino pinp pint pinu piob pion piot pipi pipo pipp piri pirn piro pirr piru piti pito pitr pitt pitu pnin pnon pnot pnpo pnpp pnro pntr pnup pobo poin poio poni pono ponp pont poon poop poor poot pop- popi popo popp popt porb pori porn poro porr port poti poto pott potu poui poun poup pour pout ppib pppn pppo pppp ppru pptn pptt ppur pri- prii prin prnp pro- prob pron proo prop prot prou prri prti prtp prtr prut pruu ptop ptui pubu puin puir puit puiu puno punt punu pupi pupu pur- purb puri puro purp purr puru put- puti puto putt putu rbbb rbbr rib- ribo ribu riin rinn rino rion riot riou ripi ripp ripr ript riri riti rito ritt ritu rnbr rnin rnnt rnot rntp rnut rob- robb robi robo robt robu roin roio roir roit roiu roni rono ront roob rooi roon roop roor root ropo rori roro rort roru roti rotn roto rotr rott roub roun roup rout rpii rpob rpon rppn rptn rrrr rrun rttp rubb rubi rubp rubu ruin ruit runi runn runo runt rupp rupt ruri ruro rurp ruru ruti ruto rutt rutu ruun tbit tbrb tbtp tibi tibu tiit tiiu tini tinn tino tint tinu tion tiop tiou tip- tipi tipo tipp tipt tipu tirb tiri tiro tirr tiru titi tito titp titt titu tnut tobi tobo tobt tobu toit tonb toni tonn tono tonu toon toor toot top- topi topo topp topt topu tori torn toro torp torr tort toru toti toto totr tott toui toun toup tour tout tpir tpon tppp tppr tptp tptr tput tri- trib trin trio trip trit trno troi tron troo trop trot trou trpn trpp trtr trub trun trut truu ttbb tton ttop tttt tubb tubo tubr tubu tuin tuit tuiu tunb tuni tunn tuno tunu tuor tupi tupo tupu turb turi turn turo turp turr turt turu tuti tuto tutt tutu tuuo u-rp ubbi ubbo ubii ubir ubit ubon uint uipi uirr uni- unii unin unio unir unit unni unno unon unop unro untb unto unut uor- upin upnp upon upor uppp uppu upri upto upup urbi urib urin uriu urni uro- uroo urpo urri urun urup urur urut utin utor utri utti utto uttu uuni uuno uuri uuuu