-er a-a a-b aaa aab aad aae aao aar aau aax ab- aba abb abd abe abo abr abu abx ad- ada adb add ade ado adr adu adx aea aeb aed aee aeo aer aeu aex aoa aob aod aoe aoo aor aou aox ar- ara arb ard are aro arr aru arx au- aua aub aud aue auo aur aux ax- axa axe axo axr axx b-u baa bab bad bae bao bar bau bax bba bbb bbd bbe bbo bbr bbu bbx bda bdb bdd bde bdo bdr bdu bdx be- bea beb bed bee beo ber beu bex boa bob bod boe boo bor bou box bra brb brd bre bro brr bru brx bua bub bud bue buo bur buu bux bxb bxd bxo bxx daa dab dad dae dao dar dau dax dba dbb dbd dbe dbo dbr dbu dbx dda ddb ddd dde ddo ddr ddu ddx de- dea deb ded dee deo der deu dex doa dob dod doe doo dor dou dox dra drb drd dre dro drr dru drx dua dub dud due duo dur dux dxd dxo dxr dxx eaa eab ead eae eao ear eau eax eba ebb ebd ebe ebo ebr ebu ebx ed- eda edb edd ede edo edr edu edx eea eeb eed eee eeo eer eex eo- eoa eob eod eoe eoo eor eou era erb erd ere ero err eru eu- eua eub eud eue eur eux ex- exa exd exe exo exr exu exx oaa oab oad oae oao oar oau oax ob- oba obb obd obe obo obr obu obx oda odb odd ode odo odr odu oea oeb oed oee oeo oer oex oo- ooa oob ood ooo oor oox or- ora orb ord ore oro orr oru orx ou- oua oud oue ouo our ox- oxa oxb oxo oxx ra- raa rab rad rae rao rar rau rax rba rbb rbd rbe rbo rbr rbu rbx rda rdb rdd rde rdo rdr rdu rdx re- rea reb red ree reo rer reu rex roa rob rod roe roo ror rou rox rra rrb rrd rrr rru rua rub rud rue ruo rur ruu rux rxr ua- uaa uab uad uae uao uar uau uba ubb ube ubo ubr ubu ubx uda udb udd ude udo udr udu udx uea ueb ued uee uer uoa uob uod uoe uoo uor uox ur- ura urb urd ure uro urr uru urx uua uue uur uuu uxb uxo uxr uxu xaa xad xar xau xbe xbr xbx xda xdb xde xdr xed xee xer xeu xex xoa xod xoo xor xox xrd xrx xue xxo xxx

a-be a-do aaaa aaab aaad aaae aaar aaba aabb aabd aada aade aadu aaea aaoe aaoo aara aard aare aaro aaru abaa abab abad abae abar abau abax abb- abba abbb abbe abbo abbr abda abdo abdu abed abee aber aboa abob abod aboo abor abou abox abra abro abua abud abue adaa adab adad adae adao adar adba adda addd adde addo addr addu adea adeb adee adeo ader adob adod adoe adoo ador adox adra adre adro adua adub adue adur aede aeer aer- aera aerd aero aoba aoeu aora aorb arab arad arae arar arau arax arba arbe arda arde ardo ardu area ared aree areo areu arex aroa arob arod aroe aroo aror arr- arra arre arro arrr arru arua arub arud arue auaa aube aude audo auer aur- aura aurd aure auro auxa axar axed axer axo- axoa axxo ba-x baaa baad baar baba babb babe babo babr babu bada badb badd bade bado badr badu baed baer bar- bara barb bard bare baro barr baru barx bau- baud baur baux bbad bbau bbbb bbdd bbdo bbeb bbox bd-r bead bear beau beba bebb bebe bebo beda bede bedo bedu beeb beed beer beo- beod beor bera berd bere bero berr beru beur beux boab boad boar boba bobb bobe bobo bobu boda bodb bode bodo bodu boea boee boeo boer boob bood booe boor boox bor- bora bord bore boro borr boru boua boud boue bour boxa brab brad brae brao brau brax brda brdo brea breb bred bree breo brer brex broa brob brod broe broo bror brou brox brrr brud brue brux buad buar buba bubb bube bubo bubu buda budb budd bude budo budu buea buer bueu bur- bura burb burd bure buro burr buru buxa d-bo daab daad daae daar daau daba dabb dabo dabu dada dade dado dadu daeb daer daeu daou dara darb dard dare daro darr daru daub daud daue daur daux dbar dddd ddre ddub dead deae dear deau deba debe debu deda dedd dede dedo dedu deeb deed deer deor der- dera derb dere dero derr deua deue deur deux dex- dexa dexe do-x doab doae doar doba dobb dobe dobu dod- doda dodd dode dodo doea doer doob dood door dora dord dore doro dorr doru doub doud doue dour doux doxa draa drab drad drar drau drax drba drda drea dred dree drob drod drou drra drua drub drue druu duaa duab duad duar dub- duba dubb dube dubu duda dudd dude dudo dudu duer duo- dura dure duro duru duur dxab dxbe dxbr dxdr dxed dxra dxrd dxre dxrr dxrx dxue dxur dxxr dxxx eaba eada eadb eadd eara earb eard eare earo eaux ebba ebbo ebbr ebed eber eboe eboo ebor ebox ebro ebru ebur edad edar edax edda edde eddo ede- edea eder edex edod edou edra edru edur eede eedu eeea eeee eera eero eode eora eore eoux er-x erad erau erba erbb erbe erda erde ereb ered erer erob erod eroe eroo erra erre erro erua erub erur euba eude euer eur- eura eure euro exa- exda exed exer exo- exod exor exrx o-eo oaau oade oaer oara oare obad obba obbo obea obed ober obex oboe obor obox obra obre obro odax odbo odda oddd odea oded odeo oder odex odoo odor odou