-up b-p b-u bbb bbg bbi bbp bbr bbs bbt bbu bgb bgg bgi bgp bgr bgs bgt bgu bi- bib big bii bip bir bis bit biu bpb bpg bpi bpp bpr bps bpt bpu brb brg bri brp brr brs brt bru bsb bsg bsi bsp bsr bss bst bsu btb btg bti btp btr bts btt btu bub bug bui bup bur bus but buu g-p gbg gbi gbp gbr gbs gbt gbu ggb ggg ggi ggp ggr ggs ggt ggu gib gig gii gip gir gis git giu gpb gpg gpi gpp gpr gps gpt gpu grb grg gri grp grr grs grt gru gsb gsg gsi gsp gsr gss gst gsu gtb gtg gti gtp gtr gts gtt gtu gu- gub gug gui gup gur gus gut guu ibb ibg ibi ibp ibr ibs ibt ibu igb igg igi igp igr igs igt igu iib iii iip iir iis iit iiu ipb ipg ipi ipp ipr ips ipt ipu ir- irb irg iri irp irr irs irt iru is- isb isg isi isp isr iss ist isu itb itg iti itp its itt itu iu- iub iug iui iup iur ius iut p-p pbb pbg pbi pbp pbr pbs pbt pbu pgb pgg pgi pgp pgr pgs pgt pib pig pii pip pir pis pit piu ppb ppg ppi ppp ppr pps ppt ppu prb prg pri prp prr prs prt pru ps- psb psg psi psp psr pss pst psu pt- ptb ptg pti ptp ptr pts ptt ptu pub pug pui pup pur pus put puu rbb rbg rbi rbp rbr rbs rbt rbu rgb rgg rgi rgp rgr rgs rgt rib rig rii rip rir ris rit rpb rpg rpi rpp rpr rps rpt rpu rrb rrg rri rrp rrr rrs rrt rru rsb rsg rsi rsp rsr rss rst rsu rtb rtg rti rtp rtr rts rtt rtu rub rug rui rup rur rus rut ruu sbb sbg sbi sbp sbr sbs sbt sbu sgb sgg sgi sgp sgr sgs sgt sgu sib sig sii sip sir sis sit siu spb spg spi spp spr sps spt spu sr- srb srg sri srp srr srs srt ss- ssb ssg ssi ssp ssr sss sst ssu stb stg sti stp str sts stt stu sub sug sui sup sur sus sut suu tbb tbg tbi tbp tbr tbs tbt tbu tgb tgg tgi tgp tgr tgs tgt tgu tib tig tii tip tir tis tit tiu tpb tpg tpi tpp tpr tps tpt tpu trb trg tri trp trr trs trt tru tsb tsg tsi tsp tsr tss tst tsu ttb ttg tti ttp ttr tts ttt ttu tub tug tui tup tur tus tut tuu ubb ubg ubi ubp ubr ubs ubt ubu ugb ugg ugi ugp ugr ugs ugt ugu uib uig uii uip uir uis uit uiu up- upb upg upi upp upr ups upt upu ur- urb urg uri urp urr urs urt uru usb usg usi usp usr uss ust usu utb uti utp utr uts utt utu uug uur uus uut uuu

bbbb bbbs bbpr bbrg bggs bgst bibb bibi bibs bigb bigg bigs bigt bigu biis bipp bips bipu birb birg biri birr birs birt biru bis- bisp biss bist bisu bits bitt bitu bpsu bpti brig bris brit brrr brrs brsb brsr brst brug brup brus brut bsgs bspp bspr bsts bsup btbp btps btrt btss bttb btus bubb bubi bubs bubu bugg bugi bugs buir buis buit buiu bups bur- burb burg buri burp burr burs burt buru busi buss bust busu but- buti buts butt buus gbbs ggbt gggg ggss gibb gibs gigg gigi gigs giis gipi gipp gips girg giri girr girs girt giru giss gist gits giur gius gpgp gpip gprp gprs gpsg gpsi gpss grbr grib grig grip gris grit grps grrr grrs grss grub grug grui grur grus grut gsis gspt gstr gsur gtbr gtip gubb gubi gubs gubu gugb gugg gugi gugu guib guis gups gurb gurg guri gurr gurs gurt guru gusb guss gust guti guts gutt gutu guus ibis ibri ibss ibtb ibts ibus iggs igis igri igsp igus iiii iiis iiit iirs iisi iisp iisr iist iisu iitr iitt ippr ipri ipsi ipsp ipss ipts ipur ipus iput irbp irgs iri- irig irip iris irps irri irrs irsg irsp irti irtp irts irus isbt isis isit ispr isps isrg isri isrp issi issp issr isss issu isti istp istr ists isup isus itbs itgs itis itri itrs itsi itsp itsu itup itur iugs iuiu iupp iuss iust pbrs pbsp pgib pgpu pgss pgup pibb pibi pigb pigg pigp pigs pigt pigu piip pipi pipp pips pirg piri pirr pirs piru pisg pisi piss pist pisu piti pitr pits pitt pitu pius ppgi ppib ppig pppp ppps ppru ppss ppts pptt ppur prbs prgs pri- prig prii pris prps prri prrs prsi prss prti prtp prtr prus prut pruu psbr psbt psgi psgr psip psis pspi pspp pspr psps psrp psst psts pstu ptgs ptui pubs pubu pugs pugu puig puir puis puit puiu pupi pups pupu pur- purb purg puri purp purr purs puru pusi puss pust put- puti puts putt putu rbbb rbbr rbbs rbis rbsp rbss rbst rgbi rgit rgtr rgts rib- ribs ribu rigg rigi rigs rigu riis ripi ripp ripr rips ript riri rirs risi risp riss rist risu riti rits ritt ritu rius rpgs rpii rpps rpts rrrr rrsp rsbi rsgb rsis rspb rsps rstp rsts rstu rtgs rtps rtss rttp rtts rubb rubi rubp rubs rubu rugg rugi rugs ruis ruit rupp rupt ruri rurp rurs ruru rusi russ rust rusu ruti ruts rutt rutu s-ib s-ii sbbs sbig sbsi sbsp sbst sbus sggg sggs sgps sgss sgts sibi sibs sibu sigg sigi sigs siit sipi sipp sips sipt siri sirp sirr sirs sirt siru sisi siss sist sisu sit- siti sits sitt situ siui sius siut spgb spgt spib spig spip spir spis spit spps spri sprs