-er a-a a-b a-t aaa aab aae aam aao aar aat aau aax ab- aba abb abe abm abo abr abt abu abx aea aeb aee aem aeo aer aet aeu aex ama amb ame amm amo amr amt amu amx aoa aob aoe aom aoo aor aot aou aox ar- ara arb are arm aro arr art aru arx at- ata atb ate atm ato atr att atu atx au- aua aub aue aum auo aur aut aux ax- axa axe axm axo axr axt axx b-u baa bab bae bam bao bar bat bau bax bba bbb bbe bbm bbo bbr bbt bbu bbx be- bea beb bee bem beo ber bet beu bex bma bmb bme bmm bmo bmr bmt bmu bmx boa bob boe bom boo bor bot bou box bra brb bre brm bro brr brt bru brx bta btb bte btm bto btr btt btu btx bua bub bue bum buo bur but buu bux bxb bxm bxo bxx eaa eab eae eam eao ear eat eau eax eba ebb ebe ebm ebo ebr ebt ebu ebx eea eeb eee eem eeo eer eet eex em- ema emb eme emm emo emr emt emu emx eo- eoa eob eoe eom eoo eor eot eou era erb ere erm ero err ert eru eta etb ete etm eto etr ett etu etx eu- eua eub eue eur eut eux ex- exa exe exo exr ext exu exx m-o m-r maa mab mae mam mao mar mat mau max mba mbb mbe mbm mbo mbr mbt mbu mbx mea meb mee mem meo mer met meu mex mma mmb mme mmm mmo mmr mmt mmu mmx moa mob moe mom moo mor mot mou mox mra mrb mre mrm mro mrr mrt mru mrx mta mtb mte mtm mto mtr mtt mtu mtx mua mub mue mum mur mut muu mux mxa mxr mxu oaa oab oae oam oao oar oat oau oax ob- oba obb obe obm obo obr obt obu obx oea oeb oee oem oeo oer oet oex om- oma omb ome omm omo omr omt omu omx oo- ooa oob oom ooo oor oot oox or- ora orb ore orm oro orr ort oru orx ot- ota otb ote otm oto otr ott otu ou- oua oue oum ouo our out ox- oxa oxb oxo oxt oxx ra- raa rab rae ram rao rar rat rau rax rba rbb rbe rbm rbo rbr rbt rbu rbx re- rea reb ree rem reo rer ret reu rex rma rmb rme rmm rmo rmr rmt rmx roa rob roe rom roo ror rot rou rox rra rrb rrm rrr rrt rru rta rtb rte rtm rto rtr rtt rtu rtx rua rub rue rum ruo rur rut ruu rux rxr t-x taa tab tae tam tao tar tat tau tax tba tbb tbe tbm tbo tbr tbt tbu te- tea teb tee tem teo ter tet teu tex tma tmb tme tmm tmo tmr tmt tmu tmx to- toa tob toe tom too tor tot tou tox tra trb tre trm tro trr trt tru trx tta ttb tte ttm tto ttr ttt ttu ttx tua tub tue tum tuo tur tut tuu tux txe txt txu ua- uaa uab uae uam uao uar uat uau uba ubb ube ubo ubr ubt ubu ubx uea ueb uee uem uer uet um- uma umb ume umm umo umr umt umu uoa uob uoe uom uoo uor uot uox ur- ura urb ure urm uro urr urt uru urx uta utb ute utm uto utr utt utu utx uua uue uum uur uut uuu uxb uxo uxr uxt uxu xaa xam xar xat xau xbe xbr xbx xee xem xer xet xeu xex xma xmm xmo xmr xmt xmu xmx xoa xom xoo xor xot xox xrt xrx xtm xtr xtx xue xxo xxx