-up b-p b-u bbb bbi bbn bbp bbr bbs bbt bbu bi- bib bii bin bip bir bis bit biu bnb bni bnn bnp bnr bns bnt bnu bpb bpi bpn bpp bpr bps bpt bpu brb bri brn brp brr brs brt bru bsb bsi bsn bsp bsr bss bst bsu btb bti btn btp btr bts btt btu bub bui bun bup bur bus but buu ibb ibi ibn ibp ibr ibs ibt ibu iib iii iin iip iir iis iit iiu in- inb ini inn inp inr ins int inu ipb ipi ipn ipp ipr ips ipt ipu ir- irb iri irn irp irr irs irt iru is- isb isi isn isp isr iss ist isu itb iti itn itp its itt itu iu- iub iui iup iur ius iut n-i nbb nbi nbn nbp nbr nbs nbt nbu nib nii nin nip nir nis nit niu nnb nni nnn nnp nns nnt nnu npb npi npn npp npr nps npt npu nrb nri nrn nrp nrr nrs nrt nru nsb nsi nsn nsp nsr nss nst nsu ntb nti ntn ntp ntr nts ntt ntu nub nui nun nup nur nus nut nuu p-p pbb pbi pbn pbp pbr pbs pbt pbu pib pii pin pip pir pis pit piu pn- pnb pni pnn pnp pnr pns pnt pnu ppb ppi ppn ppp ppr pps ppt ppu prb pri prn prp prr prs prt pru ps- psb psi psn psp psr pss pst psu pt- ptb pti ptn ptp ptr pts ptt ptu pub pui pun pup pur pus put puu rbb rbi rbn rbp rbr rbs rbt rbu rib rii rin rip rir ris rit rnb rni rnn rnp rnr rns rnt rnu rpb rpi rpn rpp rpr rps rpt rpu rrb rri rrn rrp rrr rrs rrt rru rsb rsi rsn rsp rsr rss rst rsu rtb rti rtn rtp rtr rts rtt rtu rub rui run rup rur rus rut ruu sbb sbi sbn sbp sbr sbs sbt sbu sib sii sin sip sir sis sit siu snb sni snn snp snr sns snt snu spb spi spn spp spr sps spt spu sr- srb sri srn srp srr srs srt ss- ssb ssi ssn ssp ssr sss sst ssu stb sti stn stp str sts stt stu sub sui sun sup sur sus sut suu tbb tbi tbn tbp tbr tbs tbt tbu tib tii tin tip tir tis tit tiu tnb tni tnn tnp tnr tns tnt tpb tpi tpn tpp tpr tps tpt tpu trb tri trn trp trr trs trt tru tsb tsi tsn tsp tsr tss tst tsu ttb tti ttn ttp ttr tts ttt ttu tub tui tun tup tur tus tut tuu ubb ubi ubn ubp ubr ubs ubt ubu uib uii uin uip uir uis uit uiu un- unb uni unn unp unr uns unt unu up- upb upi upn upp upr ups upt upu ur- urb uri urn urp urr urs urt uru usb usi usn usp usr uss ust usu utb uti utn utp utr uts utt utu uun uur uus uut uuu

bbbb bbbs bbin bbpr bibb bibi bibs biin biis bin- bini binn bins bint binu bipp bips bipu birb biri birn birr birs birt biru bis- bisp biss bist bisu bits bitt bitu bnib bnin bnpp bnrr bnss bpsu bpti brin bris brit brns brrr brrs brsb brsr brst brun brup brus brut bsin bsns bspp bspr bsts bsup btbp btps btrt btss bttb btus bubb bubi bubs bubu buin buir buis buit buiu bunb buni bunn buns bunt bunu bups bur- burb buri burn burp burr burs burt buru busi buss bust busu but- buti buts butt buus ibis ibns ibri ibsn ibss ibtb ibts ibus iiii iiis iiit iirs iisi iisp iisr iist iisu iitr iitt inis init inni innr inns innu inp- inpi inpp inpt inri inrs insp inss inst insu inti intn intp intr ints intu inui inun inup inus ipin ippr ipri ipsi ipsp ipss ipts ipur ipus iput irbp iri- irin irip iris irps irri irrs irsp irti irtp irts irun irus isbn isbt isin isis isit isnt ispr isps isri isrp issi issp issr isss issu isti istp istr ists isup isus itbs itin itis itri itrs itsi itsp itsu itup itur iuiu iupp iuss iust n-ii n-up nbpp nbps nbsp nbti nibi nibs niip niir niit niiu nini nins nipr nips nipt nirs nirt niru nisi nisp niss nist nisu nitb niti nitr nits niur nnit nnnn nnpi nnpr nnss nntn npin npri nprt npss nptn nrpn nrps nrsp nrts nsin nsis nsnr nspi nsps nssb nssp nssr nsss nstp nsts nstu nsub ntis ntnu ntru ntsb ntss ntsu nttr ntui nubi nubs nuin nuit nunn nuns nunt nups nuri nurn nurp nurr nurs nurt nuru nusi nuss nust nusu nuts nutt nutu pbrs pbsp pibb pibi piip pini pinn pinp pins pint pinu pipi pipp pips piri pirn pirr pirs piru pisi piss pist pisu piti pitr pits pitt pitu pius pnin pnpp pntr pnup ppib pppn pppp ppps ppru ppss pptn ppts pptt ppur prbs pri- prii prin pris prnp prps prri prrs prsi prss prti prtp prtr prus prut pruu psbr psbt psip psis psni psnr pspi pspp pspr psps psrp psst psts pstu ptui pubs pubu puin puir puis puit puiu puns punt punu pupi pups pupu pur- purb puri purp purr purs puru pusi puss pust put- puti puts putt putu rbbb rbbr rbbs rbis rbsp rbss rbst rib- ribs ribu riin riis rinn ripi ripp ripr rips ript riri rirs risi risp riss rist risu riti rits ritt ritu rius rnbr rnin rnnt rnsp rntp rnut rpii rppn rpps rptn rpts rrrr rrsp rrun rsbi rsis rsnn rsnr rspb rsps rstp rsts rstu rtns rtps rtss rttp rtts rubb rubi rubp rubs rubu ruin ruis ruit runi runn runs runt rupp rupt ruri rurp rurs ruru rusi russ rust rusu ruti ruts rutt rutu ruun s-ib