-er -ic -up b-p b-u bbb bbc bbe bbi bbk bbp bbr bbs bbu bcb bcc bce bci bck bcp bcr bcs bcu be- beb bec bee bei bek bep ber bes beu bi- bib bic bie bii bik bip bir bis biu bkb bkc bke bkk bkp bkr bks bpb bpc bpe bpi bpp bpr bps bpu brb bre bri brk brp brr brs bru bsb bsc bse bsi bsk bsp bsr bss bsu bub buc bue bui buk bup bur bus buu c-- cbb cbc cbe cbi cbk cbp cbr cbs cbu ccb ccc cce cci cck ccp ccr ccs ccu ce- ceb cec cee cei cek cep cer ces ceu ci- cib cic cie cii cik cip cir cis ciu ckb ckc cki cks cpb cpc cpe cpi cpk cpp cpr cps cpu crb crc cre cri crk crp crr crs cru csb csc cse csi csk csp csr css csu cub cuc cue cui cuk cup cur cus cuu ebb ebc ebe ebi ebk ebp ebr ebs ebu ec- ecb ecc ece eci eck ecr ecs ecu eeb eec eee eek eep eer ees eib eic eie eii eik eip eir eis eiu ekb ekc eke eki ekp ekr eks eku ep- epb epc epe epi epp epr eps epu erb erc ere eri erk erp err ers eru es- esb esc ese esi esk esp esr ess esu eu- eub euc eue eui eup eur eus ibb ibc ibe ibi ibk ibp ibr ibs ibu icb icc ice ici ick icp icr ics icu ie- iec iee iei iek iep ier ies iib iic iie iii iip iir iis iiu ikb ikc ike iki ikk ikr iks iku ipb ipc ipe ipi ipp ipr ips ipu ir- irb irc ire iri irk irp irr irs iru is- isb isc ise isi isk isp isr iss isu iu- iub iuc iue iui iup iur ius kbb kbc kbe kbi kbk kbp kbr kbs kbu kcb kcc kce kci kck kcp kcr kcs kcu ke- keb kec kee kei kek kep ker kes kib kic kie kii kik kip kir kis kiu kkb kkc kke kki kkk kkp kkr kks kku kpc kpe kpi kpk kpp kpr kps kpu krc kri krk krp krr krs kru ksb ksc kse ksi ksk ksp ksr kss ksu kub kuc kue kui kuk kup kur kus kuu p-p pbb pbc pbe pbi pbk pbp pbr pbs pbu pcb pcc pce pci pck pcp pcr pcs pcu peb pec pee pei pek pep per pes peu pib pic pie pii pik pip pir pis piu pkb pkc pke pki pkp pkr pks pku ppb ppc ppe ppi ppk ppp ppr pps ppu prb prc pre pri prk prp prr prs pru ps- psb psc pse psi psk psp psr pss psu pub puc pue pui puk pup pur pus puu rbb rbc rbe rbi rbk rbp rbr rbs rbu rcb rcc rce rci rcp rcr rcs rcu re- reb rec ree rei rek rep rer res reu rib ric rie rii rik rip rir ris rkb rkc rke rkk rkp rks rku rpb rpc rpe rpi rpk rpp rpr rps rpu rrb rrc rri rrk rrp rrr rrs rru rsb rsc rse rsi rsk rsp rsr rss rsu rub ruc rue rui ruk rup rur rus ruu sbb sbc sbe sbi sbk sbp sbr sbs sbu scb scc sce sci sck scp scr scs scu se- seb sec see sei sek sep ser ses seu sib sic sie sii sik sip sir sis siu sk- skb skc ske ski skk skp skr sks sku spb spc spe spi spk spp spr sps spu sr- srb src sre sri srk srp srr srs ss- ssb ssc sse ssi ssk ssp ssr sss ssu sub suc sue sui suk sup sur sus suu ubb ubc ube ubi ubk ubp ubr ubs ubu ucb ucc uce uci uck ucp ucr ucs ucu ueb uec uee uei uep uer ues uib uic uie uii uip uir uis uiu ukb ukc uke uki ukk ukp ukr uku up- upb upc upe upi upk upp upr ups upu ur- urb urc ure uri urk urp urr urs uru usb usc use usi usk usp usr uss usu uuc uue uur uus uuu

bbbb bbbs bbci bbeb bbpr bbrc bcbc bcbp bcbs bccc bcci bccs bcec bcer bces bcie bcis bcpp bcps bcrs bcru bcsc bcss bcuc bcup bebb bebe bebi beci beck becs becu beeb beek beep beer bees beic beik beir beis beke beki beks berc bere beri berk berr bers beru bes- bese besk bess beuk beur bibb bibe bibi bibs bicc bice bici bick bics bieb bier bies bieu biis bike biku bipp bips bipu birb bire biri birk birr birs biru bis- bisc bise bisk bisp biss bisu bkpr bksp bpcp bprc bpsu brcb brce breb brec bree brei brek brep brer bres bric brie brik bris brkb brrr brrs brsb brsr bruc brue brup brus bsci bscp bscs bseb bsec bsee bser bses bsic bspp bspr bssc bsse bsup bubb bube bubi bubs bubu bucc buce buci buck bucs bucu buer bueu buic buie buik buir buis buiu buke buki bukk buku bupc bups bur- burb bure buri burk burp burr burs buru busc buse busi busk buss busu buus cbbc cbbs cbcc cbce cbcp cbcr cbcs cbcu cbec cbee cber cbir cbkr cbpc cbpp cbre cbsc cbse cbsi cbus ccbc cccb cccc ccci cccp cccs cccu ccee ccic ccii ccip ccir ccis ccpe ccpp ccpr ccps ccrc ccre ccri ccrp ccrs ccsi ccsp ccss ccuc ccup ccus cebp cebs cebu cec- cece ceci cecp cecs ceeb ceec cees ceip ceke cepc cepe cepp cepr ceps cer- cerc cere ceri cerp cers cesc cese cesi cesp cesr cess ceui cibc cibe cibi cicc cici cicr cics cicu ciee cier cies ciii ciis cikr cipp cips cirb circ cire ciri cirk cirr cirs cis- cisc cise cisk cisp cisr ciss ciuc ciup cius