-er -up b-p b-u bbb bbc bbd bbe bbp bbr bbs bbu bcb bcc bcd bce bcp bcr bcs bcu bdb bdc bdd bde bdp bdr bds bdu be- beb bec bed bee bep ber bes beu bpb bpc bpd bpe bpp bpr bps bpu brb brd bre brp brr brs bru bsb bsc bsd bse bsp bsr bss bsu bub buc bud bue bup bur bus buu c-- cbb cbc cbd cbe cbp cbr cbs cbu ccb ccc ccd cce ccp ccr ccs ccu cdb cdc cdd cde cdp cdr cds cdu ce- ceb cec ced cee cep cer ces ceu cpb cpc cpd cpe cpp cpr cps cpu crb crc crd cre crp crr crs cru csb csc csd cse csp csr css csu cub cuc cud cue cup cur cus cuu dbb dbc dbd dbe dbp dbr dbs dbu dcb dcc dcd dce dcp dcr dcs dcu ddb ddc ddd dde ddp ddr dds ddu de- deb dec ded dee dep der des deu dpb dpc dpd dpe dpp dpr dps dpu drb drc drd dre drp drr drs dru dsb dsc dsd dse dsp dsr dss dsu dub duc dud due dup dur dus ebb ebc ebd ebe ebp ebr ebs ebu ec- ecb ecc ecd ece ecr ecs ecu ed- edb edc edd ede edp edr eds edu eeb eec eed eee eep eer ees ep- epb epc epd epe epp epr eps epu erb erc erd ere erp err ers eru es- esb esc esd ese esp esr ess esu eu- eub euc eud eue eup eur eus p-p pbb pbc pbd pbe pbp pbr pbs pbu pcb pcc pcd pce pcp pcr pcs pcu pdb pdc pdd pde pdp pdr pds pdu peb pec ped pee pep per pes peu ppb ppc ppd ppe ppp ppr pps ppu prb prc prd pre prp prr prs pru ps- psb psc psd pse psp psr pss psu pub puc pud pue pup pur pus puu rbb rbc rbd rbe rbp rbr rbs rbu rcb rcc rcd rce rcp rcr rcs rcu rdb rdc rdd rde rdp rdr rds rdu re- reb rec red ree rep rer res reu rpb rpc rpd rpe rpp rpr rps rpu rrb rrc rrd rrp rrr rrs rru rsb rsc rsd rse rsp rsr rss rsu rub ruc rud rue rup rur rus ruu sbb sbc sbd sbe sbp sbr sbs sbu scb scc scd sce scp scr scs scu sdb sdc sdd sde sdp sdr sds sdu se- seb sec sed see sep ser ses seu spb spc spd spe spp spr sps spu sr- srb src srd sre srp srr srs ss- ssb ssc ssd sse ssp ssr sss ssu sub suc sud sue sup sur sus suu ubb ubc ube ubp ubr ubs ubu ucb ucc ucd uce ucp ucr ucs ucu udb udc udd ude udp udr uds udu ueb uec ued uee uep uer ues up- upb upc upd upe upp upr ups upu ur- urb urc urd ure urp urr urs uru usb usc usd use usp usr uss usu uuc uue uur uus uuu

bbbb bbbs bbdd bbeb bbpr bbrc bcbc bcbp bcbs bccc bccs bcde bcds bcec bcer bces bcpp bcps bcrs bcru bcsc bcss bcuc bcup bd-r bdbc bddc bdes bdpc bdsd bebb bebe becs becu bede beds bedu beeb beed beep beer bees berc berd bere berr bers beru bes- bese bess beur bpcp bprc bprd bpsu brcb brce brds breb brec bred bree brep brer bres brrr brrs brsb brsr bruc brud brue brup brus bsbd bscp bscs bseb bsec bsed bsee bser bses bspp bspr bsrd bssc bssd bsse bsup bubb bube bubs bubu bucc buce bucs bucu budb budd bude buds budu buer bueu bupc bups bur- burb burd bure burp burr burs buru busc buse buss busu buus c-cd cbbc cbbs cbcc cbce cbcp cbcr cbcs cbcu cbdb cbdc cbds cbec cbee cber cbpc cbpp cbrd cbre cbsc cbse cbus ccbc cccb cccc cccp cccs cccu ccdc ccdp ccdr ccds cced ccee ccpe ccpp ccpr ccps ccrc ccre ccrp ccrs ccsd ccsp ccss ccuc ccup ccus cd-e cd-r cdcs cddb cddr cdec cder cdes cdps cdre cdrs cdss cebp cebs cebu cec- cece cecp cecs cedd cede cedu ceeb ceec cees cepc cepe cepp cepr ceps cer- cerc cerd cere cerp cers cesc cese cesp cesr cess cpbc cpce cpcs cpcu cpeb cpep cper cppd cpps cpre cprs cpsc cpsr cpsu cpus crbc crbu crcc crce crcr crdc cre- creb crec cred cree crep cres creu crpc crps crsp crss crub crud crue crup crus cscb cscc cscd csce cscr cscs csdb csdp csdr csec csee csep cser cspb cspc cspd cspe csps csrc csrd csrs cssd csse cssr csup csur csus cub- cubb cube cubs cucc cuce cude cuds cued cuer cues cupe cupp cupr cups curb curd cure curr curs cusb cusd cusp cuss cusu dbcc dbcp dbcs dbpc dbpd dbrs dbss dbus dcbc dccb dccc dccp dccs dccu dcdb dcds dcps dcsc dcss dcup dddd ddes ddps ddrc ddre ddss ddub debe debs debu dec- decc decd dece decs dedd dede dedu deeb deed deep deer dees depc depe depp depr deps der- derb derc dere derp derr ders des- desc dese desp dess desu deue deur deus dpbc dpcp dper dppc dpsd dpsu drbc dred dree dres drrs drsp drub drue drup drus druu dsbc dscc dscp dscr dscs dsdp dsdr dsps dsrc dsrp dsrr dssc dssp dub- dubb dubc dube dubs dubu duce ducs dudd dude duds dudu duer dues dupe dure duru duse duur ebbc ebbr ebbs ebcc ebed eber ebes ebru ebur ebus ecbc ecbe eccb eccc ecce ecdc eced eces ecpd ecpp ecrc ecrr ecru ecsc ecse ecsp ecss ecsu ecus eddc edde eddp edds ede- eder edes edru edss educ edup edur eecs eede eedu eeee eees eeps eerc eers eese epcc epec epee eper epes eppc eppp epps eprb eprp eprs epsc epsd epsp epss epub