-er a-a a-b aaa aab aae aaf aap aar aas ab- aba abb abe abf abp abr abs aea aeb aee aef aep aer aes af- afa afb afe aff afp afr afs ap- apa apb ape apf app apr aps ar- ara arb are arf arp arr ars as- asa asb ase asf asp asr ass b-p baa bab bae baf bap bar bas bba bbb bbe bbf bbp bbr bbs be- bea beb bee bef bep ber bes bfa bfb bfe bff bfp bfr bfs bpa bpb bpe bpf bpp bpr bps bra brb bre brf brp brr brs bsa bsb bse bsf bsp bsr bss eaa eab eae eaf eap ear eas eba ebb ebe ebf ebp ebr ebs eea eeb eee eef eep eer ees ef- efa efb efe eff efp efr efs ep- epa epb epe epf epp epr eps era erb ere erf erp err ers es- esa esb ese esf esp esr ess faa fab fae faf fap far fas fba fbb fbe fbf fbp fbr fbs fea feb fee fef fep fer fes ffa ffe fff ffp ffr ffs fpa fpb fpe fpp fpr fps fra frb fre frf frp frr frs fsa fsb fse fsf fsp fsr fss p-p paa pab pae paf pap par pas pba pbb pbe pbf pbp pbr pbs pea peb pee pef pep per pes pfa pfb pfe pff pfp pfr pfs ppa ppb ppe ppf ppp ppr pps pra prb pre prf prp prr prs ps- psa psb pse psf psp psr pss ra- raa rab rae raf rap rar ras rba rbb rbe rbf rbp rbr rbs re- rea reb ree ref rep rer res rfa rfb rfe rff rfp rfr rfs rpa rpb rpe rpf rpp rpr rps rra rrb rrf rrp rrr rrs rsa rsb rse rsf rsp rsr rss saa sab sae saf sap sar sas sba sbb sbe sbf sbp sbr sbs se- sea seb see sef sep ser ses sfa sfb sfe sff sfp sfr sfs spa spb spe spf spp spr sps sr- sra srb sre srf srp srr srs ss- ssa ssb sse ssf ssp ssr sss

-ase a-be aaaa aaab aaae aaaf aaap aaar aaas aaba aabb aabp aaea aaep aaes aafa aafb aaff aapa aaps aara aare aarp aars aasa aase aasf aass abaa abab abae abaf abap abar abas abb- abba abbb abbe abbr abbs abee aber abes abff abpa abpp abpr abps abra abrs abs- absa abse absf absp abss aeaf aeap aeas aebs aeer aer- aera aers aess afaa afap afar afbs afee afer afes affa affs afpa afpe afr- afra afre afrs afsa afsb afsp apap apar apas apba apbr apbs apea apep aper apes apfa appa appr apps apra apre aprs apsa apse apss arab arae araf arap arar aras arba arbe arbs area aree aref arep ares arfa arfb arff arfs arpa arpe arps arr- arra arre arrr arrs ars- arsa arse asaa asab asae asaf asap asar asas asba asea asee asep aser ases asfa aspa aspe aspr asps asra asrs assa asse assp assr asss baaa baaf baar baas baba babb babe babr babs baer baes baff bapa bape bapp baps bar- bara barb bare barf barr bars basa base basf bass bbas bbbb bbbs bbeb bbpr beaf beap bear beas beba bebb bebe beeb beef beep beer bees befa befe beff bera bere berr bers bes- besa bese bess bfas bffs bfpp bfsr bpea bpsa brab brae braf bras brea breb bree bref brep brer bres brrr brrs brsb brsr bsaa bsap bsas bsea bseb bsee bser bses bsfa bsff bsfs bspp bspr bsra bsse eaaf eaba eafb eapp eaps eara earb eare earp ears easa ease ebba ebbr ebbs eber ebes ebsa eeea eeee eees eefa eefe eeps eera eers eese efab efas efbr efes effa effs efpa efsa epaa epas epee eper epes epfa eppa eppp epps epra eprb eprp eprs epsa epsf epsp epss eraf erap eras erba erbb erbe ereb erer eres erfs erpa erpe erps erra erre errs ersa erse esab esar esas esba esbs esea esee eser eses esfp esfs espa espe espp esps esra essa esse essp faaa faap faas faba fabe fabs faeb faes fafa fafe faff fapa fape fapp faps fara farb fare farp farr fars fasa fase fass fbar fbrs feaf feap fear feas feba febs feeb feer fees fefe feff fepa feps fera ferb fere ferr fers fesa fese fess ffar ffee ffff ffps ffrr ffsa ffss fpaa fpas fpra fprf frab frae frap fras frea free frep fres frps frsb fsas fspf fsra fssa fssf fssp paap paar paas paba paea paep paer paes pafa pafe paff papa papb pape papp papr paps par- para pare parf parp parr pars pasa pase pasp pass pbar pbpa pbrf pbrs pbsa pbsp peab peap pear peas peba peep peer pees peff pefs pepa pepe peps per- pera pere perf perp perr pers pesa pese pess pfaa pfas pfff pffr pfps pfra ppap ppar pper ppfa pppa pppp ppps pprf ppsf ppss prae prar pras prbs pre- preb pree pref prep pres prfs prps prrs prsa prse prss psap psas psbr pseb psfs pspp pspr psps psrp pssa psse raab raaf raas raba rabb rabe rabs raef raep raer raes rafa rafe raff rapa rape rapp raps rara rarb rare rarf rars rasa rase rasp rass rbaf rbbb rbbr rbbs rbsp rbss rea- reae reaf reap rear reas reba rebb rebe rebs reeb reef reep rees refe reff refr refs repe repp repr reps rera rere rers resa rese resp ress rfae rfef rpps rras rrrr rrsp rsaa rsaf rsee rspb rsps rsre rssa saab saae saaf saap saar saas saba sabb sabe sabr sabs saeb saer saes safa safb safe saff safr sapa sape sapp saps sara sare sarf sarp sarr sars sasa sase sasf sass sbaa sbar sbas sbbs sbef sber sbsa sbse sbsp se-e se-f se-s seaa seab seaf seap sear seas seba sebe