-er a-a a-b a-t aaa aab aae aao aap aar aat aax ab- aba abb abe abo abp abr abt abx aea aeb aee aeo aep aer aet aex aoa aob aoe aoo aop aor aot aox ap- apa apb ape apo app apr apt apx ar- ara arb are aro arp arr art arx at- ata atb ate ato atp atr att atx ax- axa axe axo axp axr axt axx b-p baa bab bae bao bap bar bat bax bba bbb bbe bbo bbp bbr bbt bbx be- bea beb bee beo bep ber bet bex boa bob boe boo bop bor bot box bpa bpb bpe bpo bpp bpr bpt bpx bra brb bre bro brp brr brt brx bta btb bte bto btp btr btt btx bxb bxo bxx eaa eab eae eao eap ear eat eax eba ebb ebe ebo ebp ebr ebt ebx eea eeb eee eeo eep eer eet eex eo- eoa eob eoe eoo eop eor eot ep- epa epb epe epo epp epr ept epx era erb ere ero erp err ert eta etb ete eto etp etr ett etx ex- exa exe exo exp exr ext exx oaa oab oae oao oap oar oat oax ob- oba obb obe obo obp obr obt obx oea oeb oee oeo oep oer oet oex oo- ooa oob ooo oop oor oot oox op- opa opb ope opo opp opr opt opx or- ora orb ore oro orp orr ort orx ot- ota otb ote oto otp otr ott ox- oxa oxb oxo oxt oxx p-p paa pab pae pao pap par pat pax pba pbb pbe pbo pbp pbr pbt pbx pea peb pee peo pep per pet pex poa pob poe poo pop por pot pox ppa ppb ppe ppo ppp ppr ppt ppx pra prb pre pro prp prr prt prx pt- pta ptb pte pto ptp ptr ptt ptx pxe pxr pxt ra- raa rab rae rao rap rar rat rax rba rbb rbe rbo rbp rbr rbt rbx re- rea reb ree reo rep rer ret rex roa rob roe roo rop ror rot rox rpa rpb rpe rpo rpp rpr rpt rpx rra rrb rrp rrr rrt rta rtb rte rto rtp rtr rtt rtx rxp rxr t-x taa tab tae tao tap tar tat tax tba tbb tbe tbo tbp tbr tbt te- tea teb tee teo tep ter tet tex to- toa tob toe too top tor tot tox tpa tpb tpe tpo tpp tpr tpt tpx tra trb tre tro trp trr trt trx tta ttb tte tto ttp ttr ttt ttx txe txt xaa xap xar xat xbe xbr xbx xee xep xer xet xex xoa xoo xop xor xot xox xpa xpb xpe xpo xpp xpt xrt xrx xtp xtr xtx xxo xxp xxx

a-be aaaa aaab aaae aaap aaar aaba aabb aabp aabt aaea aaep aaoe aaoo aapa aapo aapt aara aare aaro aarp aart aata aatt abaa abab abae abap abar abat abax abb- abba abbb abbe abbo abbr abbt abee aber abet aboa abob aboo abor abot abox abpa abpp abpr abra abro abta aeap aeer aer- aera aero aeta aeto aetr aett aetx aoba aopo aora aorb aort apao apap apar apat apax apba apbr apea apep aper apet apex apo- apoe apoo apop apor apot apox appa appr appt appx apra apre apro aprt apta apte aptt aptx arab arae arap arar arat arax arba arbe area aree areo arep aret arex aroa arob aroe aroo aror arpa arpe arr- arra arre arro arrr arrt arta arte arto artr artx at-t at-x ataa atab atae atap atar atat atax atea atee ateo atep ater atex atob atoe atop ator atot atpr atra atre atro atrp atrx atta atte atto attp attr axar axat axer axo- axoa axto axxo ba-x baaa baar baat baba babb babe babo babr baer bapa bape bapp bapt bar- bara barb bare baro barr bart barx bata bate bato batt baxt bbbb bbeb bbet bbox bbpr beap bear beat beba bebb bebe bebo beeb beep beer beet beo- beor beot bepo bera bere bero berr bert beta bete beto bett boab boar boat boba bobb bobe bobo boea boee boeo boep boer boet boob booe boop boor boot boox bopa bope bopp bor- bora bore boro borr bort bota botb bote boto bott boxa bpea bpoe bpot brab brae brao brat brax brea breb bree breo brep brer bret brex broa brob broe broo bror brot brox brrr btaa btbp btex btob btor btrt bttb eaba eaop eapp eara earb eare earo earp eart eata eate ebba ebbo ebbr eber eboe eboo ebor ebox ebpo ebro eeea eeee eera eero eeta eete eext eora eore eota eoto epaa epee eper epor epot epox eppa eppo eppp epra eprb epro eprp epta epte epxp er-x erap erat erba erbb erbe ereb erer eret erob eroe eroo erpa erpe erra erre erro erta etap etat etbr etee eter etoe etox etra etre etro etta ette etto exa- exer exo- exor expo expr expt exrx exta exte extr o-eo oaer oara oare oate obba obbo obea ober obet obex oboe obor obot obox obra obre obro oeax oepa oera oere oeta ooaa ooba oobe ooer oooo oora oore oort ootb ootp opap opar opep oper opet opex opo- opor oppa oppo opra opto orab orae orao orar orat orba orbb orbe orbo ore- orea oreb oreo orer orex oro- oroe oror orot orpe orra orro orta orte orto otap otar otea otee otep oter oto- otoe otoo otor otpp otra otre otro otta otte otto oxa- oxea oxep oxer oxo- oxox oxxo paap paar paat paba pabt pabx paea paep paer paox papa papb pape papp papr par- para pare paro parp parr part pata pate pato patr patt paxo pbar pbpa peab peap pear peat peax peba peep peer peet peor pepa pepe pepo per- pera pere pero perp perr pert peta pete peto petr