-er a-a a-b aaa aab aae aao aap aar aax ab- aba abb abe abo abp abr abx aea aeb aee aeo aep aer aex aoa aob aoe aoo aop aor aox ap- apa apb ape apo app apr apx ar- ara arb are aro arp arr arx ax- axa axe axo axp axr axx b-p baa bab bae bao bap bar bax bba bbb bbe bbo bbp bbr bbx be- bea beb bee beo bep ber bex boa bob boe boo bop bor box bpa bpb bpe bpo bpp bpr bpx bra brb bre bro brp brr brx bxb bxo bxx eaa eab eae eao eap ear eax eba ebb ebe ebo ebp ebr ebx eea eeb eee eeo eep eer eex eo- eoa eob eoe eoo eop eor ep- epa epb epe epo epp epr epx era erb ere ero erp err ex- exa exe exo exp exr exx oaa oab oae oao oap oar oax ob- oba obb obe obo obp obr obx oea oeb oee oeo oep oer oex oo- ooa oob ooo oop oor oox op- opa opb ope opo opp opr opx or- ora orb ore oro orp orr orx ox- oxa oxb oxo oxx p-p paa pab pae pao pap par pax pba pbb pbe pbo pbp pbr pbx pea peb pee peo pep per pex poa pob poe poo pop por pox ppa ppb ppe ppo ppp ppr ppx pra prb pre pro prp prr prx pxe pxr ra- raa rab rae rao rap rar rax rba rbb rbe rbo rbp rbr rbx re- rea reb ree reo rep rer rex roa rob roe roo rop ror rox rpa rpb rpe rpo rpp rpr rpx rra rrb rrp rrr rxp rxr xaa xap xar xbe xbr xbx xee xep xer xex xoa xoo xop xor xox xpa xpb xpe xpo xpp xrx xxo xxp xxx

a-be aaaa aaab aaae aaap aaar aaba aabb aabp aaea aaep aaoe aaoo aapa aapo aara aare aaro aarp abaa abab abae abap abar abax abb- abba abbb abbe abbo abbr abee aber aboa abob aboo abor abox abpa abpp abpr abra abro aeap aeer aer- aera aero aoba aopo aora aorb apao apap apar apax apba apbr apea apep aper apex apo- apoe apoo apop apor apox appa appr appx apra apre apro arab arae arap arar arax arba arbe area aree areo arep arex aroa arob aroe aroo aror arpa arpe arr- arra arre arro arrr axar axer axo- axoa axxo ba-x baaa baar baba babb babe babo babr baer bapa bape bapp bar- bara barb bare baro barr barx bbbb bbeb bbox bbpr beap bear beba bebb bebe bebo beeb beep beer beo- beor bepo bera bere bero berr boab boar boba bobb bobe bobo boea boee boeo boep boer boob booe boop boor boox bopa bope bopp bor- bora bore boro borr boxa bpea bpoe brab brae brao brax brea breb bree breo brep brer brex broa brob broe broo bror brox brrr eaba eaop eapp eara earb eare earo earp ebba ebbo ebbr eber eboe eboo ebor ebox ebpo ebro eeea eeee eera eero eora eore epaa epee eper epor epox eppa eppo eppp epra eprb epro eprp epxp er-x erap erba erbb erbe ereb erer erob eroe eroo erpa erpe erra erre erro exa- exer exo- exor expo expr exrx o-eo oaer oara oare obba obbo obea ober obex oboe obor obox obra obre obro oeax oepa oera oere ooaa ooba oobe ooer oooo oora oore opap opar opep oper opex opo- opor oppa oppo opra orab orae orao orar orba orbb orbe orbo ore- orea oreb oreo orer orex oro- oroe oror orpe orra orro oxa- oxea oxep oxer oxo- oxox oxxo paap paar paba pabx paea paep paer paox papa papb pape papp papr par- para pare paro parp parr paxo pbar pbpa peab peap pear peax peba peep peer peor pepa pepe pepo per- pera pere pero perp perr poar poba pobo poea poer poop poor pop- popa pope popo popp pora porb pore poro porr ppap ppar pper ppoa pppa pppo pppp prae prao prar pre- preb pree prep prex pro- proa prob proe proo prop prox raab raba rabb rabe rabo raep raer raob raop rapa rape rapp rara rarb rare raro raxa rbbb rbbr rea- reae reao reap rear reba rebb rebe rebo reeb reep reop repe repo repp repr rera rere rero rexx roab roap roar rob- roba robb robe robo roea roer roob roop roor roox ropa rope ropo rora rore roro roxa roxo rpob rpoe rrrr xaar xapo xara xare xbar xbee xbox xbra xeer xer- xera xero xexe xoro xorp xoxo xpax xper xpra xrep xxxo xxxx

-aaa- a-a-p a-box aaaee aabaa aabba aabra aapep aarop abaab ababa ababe abaer abapo abara abare abbar abear abeba abebe abeer abera abere aberr aboab abobo abora abore abrar aeaea aebbe aereo aero- aeroe aexpa apapa apar- apara apare ape-x apear apeba apeep aper- apera apere apoop apoor apopa apopo apore aporo appar apper appro aprax ar-ab arab- araba arabe arabo araea arara arare araxa arbab arbar arbee arber arbor arbre areae arear areo- arepa arere arero arexx aroab aroar aroba arobe aroer aroor aropa arope arora arore arpar arrea arroe baabe baaop babar babax babee baber baboo babra baoro bappe bar-x baraa barab barao barar barba barbe barea bareo barer baro- baroa baroo baror barra barre barro bbbee bbear be-er be-ro beara beare bebar beber bebop bebox bebra beebe bepop beppe beppo berar berba berbe berea berob beroe beror berra berre bexar bo-bo boaro bobar bobea bobr bobre boero booba booer boora boore borax borba borbo borea boree borer borex boro- boroa boroo borox borra borre borro boxbe boxee boxer bre-x breba breer breo- brera brere brobo broer brora broxa brrar brrrr e-box e-pro eapoe earar ebara ebber eeeee eepee eoppa eorpa eorre erbaa erbar erbbe erber erear erere eroor erora erore error exaro exera exorb exore exper expro o-r-b oarer oaror obaba