-er a-a a-b aaa aab aae aaf aar aau aax ab- aba abb abe abf abr abu abx aea aeb aee aef aer aeu aex af- afa afb afe aff afr afu afx ar- ara arb are arf arr aru arx au- aua aub aue auf aur aux ax- axa axe axr axx b-u baa bab bae baf bar bau bax bba bbb bbe bbf bbr bbu bbx be- bea beb bee bef ber beu bex bfa bfb bfe bff bfr bfu bfx bra brb bre brf brr bru brx bua bub bue buf bur buu bux bxb bxx eaa eab eae eaf ear eau eax eba ebb ebe ebf ebr ebu ebx eea eeb eee eef eer eex ef- efa efb efe eff efr efx era erb ere erf err eru eu- eua eub eue euf eur eux ex- exa exe exr exu exx faa fab fae faf far fau fax fba fbb fbe fbf fbr fbu fbx fea feb fee fef fer feu fex ffa ffe fff ffr ffu ffx fra frb fre frf frr fru fua fub fue fuf fur fuu fux fxe fxr fxu fxx ra- raa rab rae raf rar rau rax rba rbb rbe rbf rbr rbu rbx re- rea reb ree ref rer reu rex rfa rfb rfe rff rfr rfu rra rrb rrf rrr rru rua rub rue ruf rur ruu rux rxr ua- uaa uab uae uaf uar uau uba ubb ube ubf ubr ubu ubx uea ueb uee uef uer ufa ufe uff ufr ufu ufx ur- ura urb ure urf urr uru urx uua uue uur uuu uxb uxf uxr uxu xaa xaf xar xau xbe xbr xbx xee xer xeu xex xfa xfe xfx xrf xrx xue xxx

a-be a-fu aaaa aaab aaae aaaf aaar aaba aabb aaea aafa aafb aaff aara aare aaru abaa abab abae abaf abar abau abax abb- abba abbb abbe abbr abee aber abff abra abua abue abuf aeaf aeer aer- aera afaa afar afee afer affa afr- afra afre afru afua afue afxe arab arae araf arar arau arax arba arbe area aree aref areu arex arfa arfb arff arfu arr- arra arre arrr arru arua arub arue auaa aube auer aufe aur- aura aure auxa axaf axar axer axfr ba-x baaa baaf baar baba babb babe babr babu baer baff bar- bara barb bare barf barr baru barx bau- bauf baur baux bbau bbbb bbeb beaf bear beau beba bebb bebe beeb beef beer befa befe beff bera bere berr beru beur beux brab brae braf brau brax brea breb bree bref brer brex brfu brrr brue brux buar buba bubb bube bubu buea buer bueu bufe buff bufr bur- bura burb bure burr buru buxa eaaf eaba eafb eara earb eare eaux ebba ebbr eber ebru ebur eeea eeee eefa eefe eera efab efax efbr effa efua er-x eraf erau erba erbb erbe ereb erer erfx erra erre erua erub erur euba euer eur- eura eure exa- exer exrx faaa faba fabe fabu faeb faex fafa fafe faff fara farb fare farr faru faue faur faux faxe fbar feaf fear feba feeb feer fefe feff fera ferb fere ferr feru feux ffar ffee ffff ffrr frab frae frau frax frea free frex frub frue fuar fubb fubu fuff fufu fur- fura fure furr raab raaf raba rabb rabe rabu raef raer rafa rafe raff rara rarb rare rarf raua raub raue rauf raxa rbaf rbbb rbbr rea- reae reaf rear reau reba rebb rebe rebu reeb reef refe reff refr refu rera rere reru reue reuf reuu reux rexx rfae rfef rrrr ruba rubb rube rubu ruer rufa rufe ruff rura rure ruru uafa uaru uaua ubar ubba ubbe uber ubra ueba uefa ufer uffa uffe ufra urau urba urbe ure- urea urex urfa urfe urff urra urre urur uuuu uxue xaar xara xare xbar xbee xbra xeer xefe xer- xera xexe xfer xura xuxa xuxu xxxx

-aaa- -eaux aaaee aabaa aabba aabra aaeaf aarau abaab ababa ababe ababu abaer abara abare abaru abbar abbur abear abeau abeba abebe abeer abera abere aberr abfab abrar abreu abura aburr aeaea aebbe aerru afara afare afear afefe afere afeur affer afree afure ar-ab arab- araba arabe araea arara arare araru araux araxa arbab arbar arbee arber arbre areae arear areef arefu arere arexx arfe arrau arrea arrua aruaa aruba arura aruru auaxa auber aufer aufeu aurae aurar aurea aurra axura baabe babar babau babax babee baber babra babur baffa bafra bar-x baraa barab barar barba barbe barbu barea barer barff barra barre barru barua bauer baura baure bauru bbbee bbear be-er beafe beara beare beauf beaux bebar beber bebra beebe beffe befur berar berau berba berbe berea berra berre berru beuer beure bexar braff braux bre-x breba brebu breef breer brera brere breu- breux brrar brrrr bruer bruff bruxa bubba bubbe buber buffa buffe buraa burea burra burru buxar eafre earar ebara ebber ebure eeeee efare efere effer effra efuru erbaa erbar erbbe erber erear erere eurex eurre exera exurb faafu fabae faber fabra fabre farab farau farbe fareb farer farex farfa farre farux faura faure faxer feare febre feere ferae ferr- ferra ferre feuar feuer fraba frear freea freer freex frera frere freur fruux fu-fu fubar fuxa ra-ra raaba raabe raaff rabab rabba rabbe raeff rafar rafer raffa raffe rarae raraf rareb raree rarer raxar reafe rear- reaue rebab rebar rebbe reber rebra reefa reefe reere refar refax refer reffe rere- reree reuar reuer rexea rexer rubab rubba rubee ruber rubra ruere ruffe uber- uberx ufere uraba urare urbar urbex urea- ureae urera urrea urubu uuuuu uxeau x-bar x-fab xaraf xarre xbxrx xebra xexeu xexex

aaaaba abaera abburu abeere aberra abrera aerfer afeefa affear affeer affere affre afu-ra araafa araua araura araure araxxe arbaer arbra areare arfara arfarf arraba arrear arreau arrere arreux aruaru aubure aufbau aufruf auufer baabaa baabar baarbu baauer bababe babare babbar baberu babrru babura barara barbae barbar barbee barber barbra barbre barera barfee barrax barrea barrer baruar