-er -up b-p b-u bbb bbe bbi bbp bbr bbs bbt bbu be- beb bee bei bep ber bes bet beu bi- bib bie bii bip bir bis bit biu bpb bpe bpi bpp bpr bps bpt bpu brb bre bri brp brr brs brt bru bsb bse bsi bsp bsr bss bst bsu btb bte bti btp btr bts btt btu bub bue bui bup bur bus but buu ebb ebe ebi ebp ebr ebs ebt ebu eeb eee eep eer ees eet eib eie eii eip eir eis eit eiu ep- epb epe epi epp epr eps ept epu erb ere eri erp err ers ert eru es- esb ese esi esp esr ess est esu etb ete eti etp etr ets ett etu eu- eub eue eui eup eur eus eut ibb ibe ibi ibp ibr ibs ibt ibu ie- iee iei iep ier ies iet iib iie iii iip iir iis iit iiu ipb ipe ipi ipp ipr ips ipt ipu ir- irb ire iri irp irr irs irt iru is- isb ise isi isp isr iss ist isu itb ite iti itp its itt itu iu- iub iue iui iup iur ius iut p-p pbb pbe pbi pbp pbr pbs pbt pbu peb pee pei pep per pes pet peu pib pie pii pip pir pis pit piu ppb ppe ppi ppp ppr pps ppt ppu prb pre pri prp prr prs prt pru ps- psb pse psi psp psr pss pst psu pt- ptb pte pti ptp ptr pts ptt ptu pub pue pui pup pur pus put puu rbb rbe rbi rbp rbr rbs rbt rbu re- reb ree rei rep rer res ret reu rib rie rii rip rir ris rit rpb rpe rpi rpp rpr rps rpt rpu rrb rri rrp rrr rrs rrt rru rsb rse rsi rsp rsr rss rst rsu rtb rte rti rtp rtr rts rtt rtu rub rue rui rup rur rus rut ruu sbb sbe sbi sbp sbr sbs sbt sbu se- seb see sei sep ser ses set seu sib sie sii sip sir sis sit siu spb spe spi spp spr sps spt spu sr- srb sre sri srp srr srs srt ss- ssb sse ssi ssp ssr sss sst ssu stb ste sti stp str sts stt stu sub sue sui sup sur sus sut suu tbb tbe tbi tbp tbr tbs tbt tbu te- teb tee tei tep ter tes tet teu tib tie tii tip tir tis tit tiu tpb tpe tpi tpp tpr tps tpt tpu trb tre tri trp trr trs trt tru tsb tse tsi tsp tsr tss tst tsu ttb tte tti ttp ttr tts ttt ttu tub tue tui tup tur tus tut tuu ubb ube ubi ubp ubr ubs ubt ubu ueb uee uei uep uer ues uet uib uie uii uip uir uis uit uiu up- upb upe upi upp upr ups upt upu ur- urb ure uri urp urr urs urt uru usb use usi usp usr uss ust usu utb ute uti utp utr uts utt utu uue uur uus uut uuu

bbbb bbbs bbeb bbet bbpr bebb bebe bebi beeb beep beer bees beet beir beis beit bere beri berr bers bert beru bes- bese bess best bete beti bets bett betu beur bibb bibe bibi bibs bieb bier bies biet bieu biis bipp bips bipu birb bire biri birr birs birt biru bis- bise bisp biss bist bisu bite bits bitt bitu bpsu bpti breb bree brei brep brer bres bret brie bris brit brrr brrs brsb brsr brst brue brup brus brut bseb bsee bser bses bset bspp bspr bsse bsts bsup btbp btie btps btrt btss bttb btus bubb bube bubi bubs bubu buer bueu buie buir buis buit buiu bups bur- burb bure buri burp burr burs burt buru buse busi buss bust busu but- bute buti buts butt buus ebbr ebbs eber ebes ebis ebit ebru ebur ebus eeee eees eeps eers eese eesi eete eets eetu eiei eier eies eipr eire eirs eise eiss eist eitb eiti eitr epee eper epes epi- epie epip epis epit eppp epps eprb eprp eprs epsi epsp epss epte epub epus erbb erbe ereb erei erer eres eret erie eris erit eriu erpe erps erre errs erse ersi erst erts ertu erub erur erus esbs esee eser eses eset esie esis esit espe espi espp esps esri esse essi essp esst essu este estp estr ests esui esus etbr etee eter etes etre etsi etsu ette etti ettu etui eubi euer eur- eure eurt euse i-be ibes ibet ibie ibis ibri ibss ibtb ibts ibus ieet ieie iere ieri iers iesi iesr iest iesu iett iies iiie iiii iiis iiit iirs iisi iisp iisr iist iisu iitr iitt iper ipes ipet ipie ippr ipri ipse ipsi ipsp ipss ipts ipur ipus iput irbe irbp iree irer ires iri- irie irip iris irpe irps irre irri irrs irse irsp irte irti irtp irts irus isbe isbt iseb isee isep iser ises iset isie isis isit ispe ispr isps isri isrp isse issi issp issr isss issu iste isti istp istr ists isup isus itbe itbs itep iter ites itet itie itis itri itrs itse itsi itsp itsu itup itur iuiu iupp iuse iuss iust pbrs pbsp peep peer pees peet peip peir peis peit pepe pepi peps per- pere peri perp perr pers pert peru pese pesi pess pest pesu pete peti petr pets pett peur peut pibb pibi piep pier pies piet piip pipe pipi pipp pips pire piri pirr pirs piru pise pisi piss pist pisu pite piti pitr pits pitt pitu pius pper ppib ppie pppp ppps ppru ppss ppts pptt ppur prbs pre- preb pree prep pres pret preu pri- prie prii pris prps prri prrs prse prsi prss prti prtp prtr prue prus prut pruu psbr psbt pseb psei psip psis pspi pspp pspr psps psrp psse psst psts pstu pter ptui pu-e pube