-er a-a a-b a-t aaa aab aad aae aar aat aau aax ab- aba abb abd abe abr abt abu abx ad- ada adb add ade adr adt adu adx aea aeb aed aee aer aet aeu aex ar- ara arb ard are arr art aru arx at- ata atb atd ate atr att atu atx au- aua aub aud aue aur aut aux ax- axa axe axr axt axx b-u baa bab bad bae bar bat bau bax bba bbb bbd bbe bbr bbt bbu bbx bda bdb bdd bde bdr bdt bdu bdx be- bea beb bed bee ber bet beu bex bra brb brd bre brr brt bru brx bta btb btd bte btr btt btu btx bua bub bud bue bur but buu bux bxb bxd bxx daa dab dad dae dar dat dau dax dba dbb dbd dbe dbr dbt dbu dbx dda ddb ddd dde ddr ddt ddu ddx de- dea deb ded dee der det deu dex dra drb drd dre drr drt dru drx dta dtb dtd dte dtr dtt dtu dtx dua dub dud due dur dut dux dxd dxr dxt dxx eaa eab ead eae ear eat eau eax eba ebb ebd ebe ebr ebt ebu ebx ed- eda edb edd ede edr edt edu edx eea eeb eed eee eer eet eex era erb erd ere err ert eru eta etb etd ete etr ett etu etx eu- eua eub eud eue eur eut eux ex- exa exd exe exr ext exu exx ra- raa rab rad rae rar rat rau rax rba rbb rbd rbe rbr rbt rbu rbx rda rdb rdd rde rdr rdt rdu rdx re- rea reb red ree rer ret reu rex rra rrb rrd rrr rrt rru rta rtb rtd rte rtr rtt rtu rtx rua rub rud rue rur rut ruu rux rxr t-x taa tab tad tae tar tat tau tax tba tbb tbd tbe tbr tbt tbu tda tdb tdd tde tdr tdt tdu tdx te- tea teb ted tee ter tet teu tex tra trb trd tre trr trt tru trx tta ttb ttd tte ttr ttt ttu ttx tua tub tud tue tur tut tuu tux txe txt txu ua- uaa uab uad uae uar uat uau uba ubb ube ubr ubt ubu ubx uda udb udd ude udr udt udu udx uea ueb ued uee uer uet ur- ura urb urd ure urr urt uru urx uta utb utd ute utr utt utu utx uua uue uur uut uuu uxb uxr uxt uxu xaa xad xar xat xau xbe xbr xbx xda xdb xde xdr xdt xed xee xer xet xeu xex xrd xrt xrx xtr xtx xue xxx

a-be aaaa aaab aaad aaae aaar aaba aabb aabd aabt aada aade aadt aadu aaea aara aard aare aart aaru aata aatt abaa abab abad abae abar abat abau abax abb- abba abbb abbe abbr abbt abda abdu abed abee aber abet abra abta abtu abua abud abue abut adaa adab adad adae adar adat adba adda addd adde addr addu adea adeb adee ader adet adra adre adta adua adub adue adur aede aedt aeer aer- aera aerd aeta aetr aett aetx arab arad arae arar arat arau arax arba arbe arda arde ardu area ared aree aret areu arex arr- arra arre arrr arrt arru arta arte artr artx arua arub arud arue arut at-t at-x ataa atab atad atae atar atat atax atdt atea ated atee ater atex atra atre atru atrx atta atte attr attu atua atub atur auaa aube aude auer aur- aura aurd aure aut- aute auxa axar axat axed axer ba-x baaa baad baar baat baba babb babe babr babu bada badb badd bade badr badu baed baer bar- bara barb bard bare barr bart baru barx bata bate batt batu bau- baud baur baux baxt bbad bbau bbbb bbdd bbeb bbet bd-r bead bear beat beau beba bebb bebe beda bede bedu beeb beed beer beet bera berd bere berr bert beru beta bete bett betu beur beux brab brad brae brat brau brax brda brdt brea breb bred bree brer bret brex brrr brud brue brut brux btaa btdt btex btrt bttb buad buar buat buba bubb bube bubu buda budb budd bude budu buea buer bueu bur- bura burb burd bure burr burt buru but- buta bute butt buxa daab daad daae daar daau daba dabb dabt dabu dada dade dadu daeb daer daeu dara darb dard dare darr dart daru data date datr datt datu daub daud daue daur daut daux dbar dbtt dddd ddre ddub dead deae dear deau deba debe debt debu deda dedd dede dedu deeb deed deer deet der- dera derb dere derr deta dete detr deua deue deur deut deux dex- dexa dexe dext draa drab drad drar drat drau drax drba drda drea dred dree dret drra drua drub drue drut druu dtaa dted dttx dtxt duaa duab duad duar duat dub- duba dubb dube dubu duda dudd dude dudu duer duet dura dure durt duru duta dute duur duut dxab dxbe dxbr dxbt dxdr dxed dxra dxrd dxre dxrr dxrt dxrx dxue dxur dxxr dxxx eaba eada eadb eadd eara earb eard eare eart eata eate eaux ebba ebbr ebed eber ebru ebur edad edar edax edda edde ede- edea eder edex edra edru edta edur eede eedu eeea eeee eera eeta eete eetu eext er-x erad erat erau erba erbb erbe erda erde ereb ered erer eret erra erre erta ertu erua erub erur etat etbr etee eter etra etre etta ette ettu etua etux euba eude euer eur- eura eure eurt exa- exda exed exer exrx exta exte extr raab raad raat raba rabb rabe rabu rada radd rade radr radt radu radx raed raer rara rarb rare rata rate ratt ratu raua raub raud raue raut raxa rbbb rbbr rder rea- read reae rear reat reau reba rebb rebe rebu reda redd rede redr redu redx reeb