-er -up b-p b-u bbb bbe bbi bbk bbp bbr bbs bbu be- beb bee bei bek bep ber bes beu bi- bib bie bii bik bip bir bis biu bkb bke bkk bkp bkr bks bpb bpe bpi bpp bpr bps bpu brb bre bri brk brp brr brs bru bsb bse bsi bsk bsp bsr bss bsu bub bue bui buk bup bur bus buu ebb ebe ebi ebk ebp ebr ebs ebu eeb eee eek eep eer ees eib eie eii eik eip eir eis eiu ekb eke eki ekp ekr eks eku ep- epb epe epi epp epr eps epu erb ere eri erk erp err ers eru es- esb ese esi esk esp esr ess esu eu- eub eue eui eup eur eus ibb ibe ibi ibk ibp ibr ibs ibu ie- iee iei iek iep ier ies iib iie iii iip iir iis iiu ikb ike iki ikk ikr iks iku ipb ipe ipi ipp ipr ips ipu ir- irb ire iri irk irp irr irs iru is- isb ise isi isk isp isr iss isu iu- iub iue iui iup iur ius kbb kbe kbi kbk kbp kbr kbs kbu ke- keb kee kei kek kep ker kes kib kie kii kik kip kir kis kiu kkb kke kki kkk kkp kkr kks kku kpe kpi kpk kpp kpr kps kpu kri krk krp krr krs kru ksb kse ksi ksk ksp ksr kss ksu kub kue kui kuk kup kur kus kuu p-p pbb pbe pbi pbk pbp pbr pbs pbu peb pee pei pek pep per pes peu pib pie pii pik pip pir pis piu pkb pke pki pkp pkr pks pku ppb ppe ppi ppk ppp ppr pps ppu prb pre pri prk prp prr prs pru ps- psb pse psi psk psp psr pss psu pub pue pui puk pup pur pus puu rbb rbe rbi rbk rbp rbr rbs rbu re- reb ree rei rek rep rer res reu rib rie rii rik rip rir ris rkb rke rkk rkp rks rku rpb rpe rpi rpk rpp rpr rps rpu rrb rri rrk rrp rrr rrs rru rsb rse rsi rsk rsp rsr rss rsu rub rue rui ruk rup rur rus ruu sbb sbe sbi sbk sbp sbr sbs sbu se- seb see sei sek sep ser ses seu sib sie sii sik sip sir sis siu sk- skb ske ski skk skp skr sks sku spb spe spi spk spp spr sps spu sr- srb sre sri srk srp srr srs ss- ssb sse ssi ssk ssp ssr sss ssu sub sue sui suk sup sur sus suu ubb ube ubi ubk ubp ubr ubs ubu ueb uee uei uep uer ues uib uie uii uip uir uis uiu ukb uke uki ukk ukp ukr uku up- upb upe upi upk upp upr ups upu ur- urb ure uri urk urp urr urs uru usb use usi usk usp usr uss usu uue uur uus uuu

bbbb bbbs bbeb bbpr bebb bebe bebi beeb beek beep beer bees beik beir beis beke beki beks bere beri berk berr bers beru bes- bese besk bess beuk beur bibb bibe bibi bibs bieb bier bies bieu biis bike biku bipp bips bipu birb bire biri birk birr birs biru bis- bise bisk bisp biss bisu bkpr bksp bpsu breb bree brei brek brep brer bres brie brik bris brkb brrr brrs brsb brsr brue brup brus bseb bsee bser bses bspp bspr bsse bsup bubb bube bubi bubs bubu buer bueu buie buik buir buis buiu buke buki bukk buku bups bur- burb bure buri burk burp burr burs buru buse busi busk buss busu buus ebbr ebbs eber ebes ebis ebru ebur ebus eeee eees eeke eeks eeps eers eese eesi eesk eiei eier eies eike eiki eiks eipr eire eirs eise eisk eiss ekeb ekek eker ekes ekis ekki ekpe eksi ekur epee eper epes epi- epie epik epip epis eppp epps eprb eprp eprs epsi epsp epss epub epus erbb erbe ereb erei erer eres erie erik eris eriu erke erki erks erpe erps erre errs erse ersi erub erur erus esbs esee esek eser eses esie esik esis eske esks esku espe espi espp esps esri esse essi essp essu esui esus eubi euer eur- eure euse i-be ibes ibie ibis ibri ibss ibus ieie iere ieri iers iesi iesr iesu iies iiie iiii iiis iirs iisi iisp iisr iisu ikee iker ikes ikki ikri iksu ikue ipbk ipek iper ipes ipie ippr ipri ipse ipsi ipsp ipss ipur ipus irbe irbp iree irer ires iri- irie irip iris irki irks irpe irps irre irri irrs irse irsp irus isbe iseb isee isep iser ises isie isis isku ispe ispr isps isri isrp isse issi issp issr isss issu isup isus iuiu iupp iuse iuss kbbb kbbe kbbi kbbk kbbr kbbs kbbu kbeb kbee kbek kber kbes kbib kbie kbik kbis kbiu kbkb kbkk kbkr kbpe kbpi kbpk kbpr kbps kbpu kbrb kbre kbri kbrk kbru kbsb kbsi kbsk kbsr kbss kbsu kbub kbue kbuk kbup kbur kbus kbuu kebb kebe kebi kebr kebu keek keep keer kees keib keii keik keir keis kekb keke keki keks keku kep- kepe kepi keps kepu ker- kerb kere keri kerk kerp kerr kers keru kesb kesi kesk kesp kesr kess keup keur keus kibb kibe kibi kibr kibs kibu kier kies kieu kiii kiik kiip kiis kiiu kiki kikk kikr kiku kip- kipe kipi kipp kipr kips kipu kirb kiri kirk kirp kirr kirs kiru kise kisi kisk kisr kiss kisu kiup kiur kiuu kkbb kkbe kkbi kkbr kkbs kkik kkkk kkpk kkps kkrb kkre kkrk kkrr kkrs kkse kksi kksp kksr kkss kksu kkup kkus kkuu kpbb kpbe kpbi kpbr kpbs kpek kper kpir kpke kpkk kpkr kppk kppp kppr kprb kpre kpri kprk kprp kprr kprs kpru kpsi kpsp kpsu kpub kpur kpus krbb krbe krbi krbk krbr kreb kree krei krek kres