-er a-a a-b a-t aaa aab aae aaf aam aao aar aat aav ab- aba abb abe abf abm abo abr abt abv aea aeb aee aef aem aeo aer aet aev af- afa afb afe aff afm afo afr aft afv ama amb ame amf amm amo amr amt amv aoa aob aoe aof aom aoo aor aot aov ar- ara arb are arf arm aro arr art arv at- ata atb ate atf atm ato atr att atv av- ava avb ave avf avm avo avr avt baa bab bae baf bam bao bar bat bav bba bbb bbe bbf bbm bbo bbr bbt be- bea beb bee bef bem beo ber bet bev bfa bfb bfe bff bfm bfo bfr bft bfv bma bmb bme bmf bmm bmo bmr bmt bmv boa bob boe bof bom boo bor bot bov bra brb bre brf brm bro brr brt brv bta btb bte btf btm bto btr btt btv bva bvb bve bvm bvo bvr bvt bvv eaa eab eae eaf eam eao ear eat eav eba ebb ebe ebf ebm ebo ebr ebt ebv eea eeb eee eef eem eeo eer eet eev ef- efa efb efe eff efm efo efr eft em- ema emb eme emf emm emo emr emt emv eo- eoa eob eoe eof eom eoo eor eot era erb ere erf erm ero err ert erv eta etb ete etf etm eto etr ett etv eva evb eve evf evm evo evr evt evv faa fab fae faf fam fao far fat fav fba fbb fbe fbf fbm fbo fbr fbt fea feb fee fef fem feo fer fet fev ffa ffe fff ffm ffo ffr fft ffv fma fmb fme fmf fmm fmo fmr fmt fmv foa fob foe fof fom foo for fot fra frb fre frf frm fro frr frt fta ftb fte ftf ftm fto ftr ftt ftv fva fvt m-f m-o m-r m-v maa mab mae maf mam mao mar mat mav mba mbb mbe mbf mbm mbo mbr mbt mbv mea meb mee mef mem meo mer met mev mfa mfb mfe mff mfm mfo mfr mft mfv mma mmb mme mmf mmm mmo mmr mmt mmv moa mob moe mof mom moo mor mot mov mra mrb mre mrf mrm mro mrr mrt mrv mta mtb mte mtf mtm mto mtr mtt mtv mva mvb mve mvf mvm mvo mvr mvt mvv oaa oab oae oaf oam oao oar oat oav ob- oba obb obe obf obm obo obr obt obv oea oeb oee oef oem oeo oer oet of- ofa ofb ofe off ofm ofo ofr oft ofv om- oma omb ome omf omm omo omr omt omv oo- ooa oob oof oom ooo oor oot oov or- ora orb ore orf orm oro orr ort orv ot- ota otb ote otf otm oto otr ott otv ov- ova ovb ove ovf ovo ovv ra- raa rab rae raf ram rao rar rat rav rba rbb rbe rbf rbm rbo rbr rbt re- rea reb ree ref rem reo rer ret rev rfa rfb rfe rff rfm rfo rfr rft rfv rma rmb rme rmf rmm rmo rmr rmt rmv roa rob roe rof rom roo ror rot rov rra rrb rrf rrm rrr rrt rta rtb rte rtf rtm rto rtr rtt rtv rva rvb rve rvf rvm rvo rvr rvt rvv taa tab tae taf tam tao tar tat tav tba tbb tbe tbf tbm tbo tbr tbt tbv te- tea teb tee tef tem teo ter tet tev tfa tfb tfe tff tfm tfo tfr tft tma tmb tme tmf tmm tmo tmr tmt tmv to- toa tob toe tof tom too tor tot tov tra trb tre trf trm tro trr trt trv tta ttb tte ttf ttm tto ttr ttt ttv tva tvb tve tvf tvm tvo tvr tvt v-a v-e vaa vab vae vam vao var vat vav vba vbm vbo vbr vbv vea veb vee vef vem veo ver vet vfa vfb vff vfm vfr vft vfv vm- vma vmf vmm vmo vmr vmt voa vob voe vof vom voo vor vot vov vra vrb vre vrf vrm vrr vrt vta vtb vte vtm vto vtr vtt vtv vva vvb vvm vvo vvr vvt vvv

a-be aaaa aaab aaae aaaf aaam aaar aaav aaba aabb aabm aabt aaea aaem aaev aafa aafb aaff aama aamb aame aamo aamr aaoe aaoo aara aare aarm aaro aart aata aatf aatt aava abaa abab abae abaf abam abar abat abb- abba abbb abbe abbo abbr abbt abee aber abet abff abma abmb abmt aboa abob abof aboo abor abot abov abra abro abta abva aeaf aeer aemt aeom aer- aera aero aeta aetf aeto aetr aett aeva afaa afam afao afar afat afee afer afet affa affo afft afma afoa afoe afoo afor afr- afra afre afrm afro afta afte amaa amae amam amar amat amb- amba ambe ambo ambr amee amer amet amfm amfr amm- amma amme ammo amob amof amoo amor amot amra amro amta amte amto aoba aoma aora aorb aort aotf arab arae araf aram arar arat arba arbe area aree aref arem areo aret arev arfa arfb arff arft arma arme armm armo armt aroa arob aroe arom aroo aror arr- arra arre arro arrr arrt arta arte arto artr artv arva arve arvo at-t ataa atab atae atar atat atea atee atef atem ateo ater atfb atfe atm- atma atme atmo atob atoe atof atom ator atot atra atre atrm atro atta atte atto attr avab avao avar avat avea aveo aver avma avor avot avra avre avro avva avvo baaa baaf baam baar baat baba babb babe babm babo babr baer baff bafo baft bama bamb bame bamf bamm bar- bara barb bare barf barm baro barr bart bata bate batf bato batt bava bave bbbb bbeb bbet beaf beam bear beat beav beba bebb bebe bebo beeb beef beem beer beet befa befe