-er a-a a-b a-t aaa aab aad aae aaf aao aar aat aau ab- aba abb abd abe abf abo abr abt abu ad- ada adb add ade adf ado adr adt adu aea aeb aed aee aef aeo aer aet aeu af- afa afb afd afe aff afo afr aft afu aoa aob aod aoe aof aoo aor aot aou ar- ara arb ard are arf aro arr art aru at- ata atb atd ate atf ato atr att atu au- aua aub aud aue auf auo aur aut b-u baa bab bad bae baf bao bar bat bau bba bbb bbd bbe bbf bbo bbr bbt bbu bda bdb bdd bde bdf bdo bdr bdt bdu be- bea beb bed bee bef beo ber bet beu bfa bfb bfd bfe bff bfo bfr bft bfu boa bob bod boe bof boo bor bot bou bra brb brd bre brf bro brr brt bru bta btb btd bte btf bto btr btt btu bua bub bud bue buf buo bur but buu daa dab dad dae daf dao dar dat dau dba dbb dbd dbe dbf dbo dbr dbt dbu dda ddb ddd dde ddf ddo ddr ddt ddu de- dea deb ded dee def deo der det deu dfa dfb dfd dfe dff dfo dfr dft dfu doa dob dod doe dof doo dor dot dou dra drb drd dre dro drr drt dru dta dtb dtd dte dtf dto dtr dtt dtu dua dub dud due duf duo dur dut eaa eab ead eae eaf eao ear eat eau eba ebb ebd ebe ebf ebo ebr ebt ebu ed- eda edb edd ede edf edo edr edt edu eea eeb eed eee eef eeo eer eet ef- efa efb efd efe eff efo efr eft eo- eoa eob eod eoe eof eoo eor eot eou era erb erd ere erf ero err ert eru eta etb etd ete etf eto etr ett etu eu- eua eub eud eue euf eur eut faa fab fad fae faf fao far fat fau fba fbb fbd fbe fbf fbo fbr fbt fbu fda fdb fdd fde fdf fdo fdr fdt fdu fea feb fed fee fef feo fer fet feu ffa ffd ffe fff ffo ffr fft ffu foa fob foe fof foo for fot fou fra frb frd fre frf fro frr frt fru fta ftb ftd fte ftf fto ftr ftt ftu fua fub fud fue fuf fuo fur fut fuu oaa oab oad oae oaf oao oar oat oau ob- oba obb obd obe obf obo obr obt obu oda odb odd ode odf odo odr odt odu oea oeb oed oee oef oeo oer oet of- ofa ofb ofd ofe off ofo ofr oft ofu oo- ooa oob ood oof ooo oor oot or- ora orb ord ore orf oro orr ort oru ot- ota otb otd ote otf oto otr ott otu ou- oua oud oue ouf ouo our out ra- raa rab rad rae raf rao rar rat rau rba rbb rbd rbe rbf rbo rbr rbt rbu rda rdb rdd rde rdf rdo rdr rdt rdu re- rea reb red ree ref reo rer ret reu rfa rfb rfd rfe rff rfo rfr rft rfu roa rob rod roe rof roo ror rot rou rra rrb rrd rrf rrr rrt rru rta rtb rtd rte rtf rto rtr rtt rtu rua rub rud rue ruf ruo rur rut ruu taa tab tad tae taf tao tar tat tau tba tbb tbd tbe tbf tbo tbr tbt tbu tda tdb tdd tde tdf tdo tdr tdt tdu te- tea teb ted tee tef teo ter tet teu tfa tfb tfd tfe tff tfo tfr tft tfu to- toa tob tod toe tof too tor tot tou tra trb trd tre trf tro trr trt tru tta ttb ttd tte ttf tto ttr ttt ttu tua tub tud tue tuf tuo tur tut tuu ua- uaa uab uad uae uaf uao uar uat uau uba ubb ube ubf ubo ubr ubt ubu uda udb udd ude udf udo udr udt udu uea ueb ued uee uef uer uet ufa ufd ufe uff ufo ufr uft ufu uoa uob uod uoe uoo uor uot ur- ura urb urd ure urf uro urr urt uru uta utb utd ute utf uto utr utt utu uua uue uur uut uuu

a-be a-do a-fu aaaa aaab aaad aaae aaaf aaar aaba aabb aabd aabt aada aade aadt aadu aaea aafa aafb aafd aaff aaoe aaoo aara aard aare aaro aart aaru aata aatf aatt abaa abab abad abae abaf abar abat abau abb- abba abbb abbe abbo abbr abbt abda abdo abdu abed abee aber abet abff aboa abob abod abof aboo abor abot abou abra abro abta abtu abua abud abue abuf abut adaa adab adad adae adao adar adat adba adda addd adde addo addr addu adea adeb adee adeo ader adet adfa adob adod adoe adoo ador adot adra adre adro adta adua adub adue adur aeaf aede aedt aeer aer- aera aerd aero aeta aetf aeto aetr aett afaa afad afao afar afat afdb afee afer afet affa affo afft afoa afoe afoo afor afr- afra afre afro afru afta afte afua afud afue aoba aoeu aora aorb aort aotd aotf aouf aout arab arad arae araf arar arat arau arba arbe arda arde ardf ardo ardu area ared aree aref areo aret areu arfa arfb arff arft arfu aroa arob arod aroe aroo aror arr- arra arre arro arrr arrt arru arta arte arto artr arua arub arud arue arut at-t ataa atab atad atae atar atat atdt atea ated atee atef ateo ater atfb atfe atob atod atoe atof ator atot atra atre atro atru atta atte atto attr attu atua atub atur auaa aube aude audo auer aufe aur- aura aurd aure auro aut- aute auto baaa baad baaf baar baat baba babb babe babo babr babu bada badb badd bade bado