-er a-a a-b a-i a-t aaa aab aae aaf aai aao aar aat ab- aba abb abe abf abi abo abr abt aea aeb aee aef aei aeo aer aet af- afa afb afe aff afi afo afr aft ai- aia aib aie aif aii aio air ait aoa aob aoe aof aoi aoo aor aot ar- ara arb are arf ari aro arr art at- ata atb ate atf ati ato atr att baa bab bae baf bai bao bar bat bba bbb bbe bbf bbi bbo bbr bbt be- bea beb bee bef bei beo ber bet bfa bfb bfe bff bfi bfo bfr bft bi- bia bib bie bif bii bio bir bit boa bob boe bof boi boo bor bot bra brb bre brf bri bro brr brt bta btb bte btf bti bto btr btt eaa eab eae eaf eai eao ear eat eba ebb ebe ebf ebi ebo ebr ebt eea eeb eee eef eeo eer eet ef- efa efb efe eff efi efo efr eft eia eib eie eif eii eio eir eit eo- eoa eob eoe eof eoi eoo eor eot era erb ere erf eri ero err ert eta etb ete etf eti eto etr ett faa fab fae faf fai fao far fat fba fbb fbe fbf fbi fbo fbr fbt fea feb fee fef fei feo fer fet ffa ffe fff ffi ffo ffr fft fia fib fie fif fii fir fit foa fob foe fof foi foo for fot fra frb fre frf fri fro frr frt fta ftb fte ftf fti fto ftr ftt i-f ia- iaa iab iae iaf iai iao iar iat iba ibb ibe ibf ibi ibo ibr ibt ie- iea iee ief iei ier iet ifa ifb ife iff ifi ifo ifr ift iia iib iie iif iii iio iir iit io- ioa iob ioe iof ioi ioo ior iot ir- ira irb ire irf iri iro irr irt ita itb ite itf iti ito itt o-i oaa oab oae oaf oai oao oar oat ob- oba obb obe obf obi obo obr obt oea oeb oee oef oei oeo oer oet of- ofa ofb ofe off ofi ofo ofr oft oia oib oie oif oii oio oir oit oo- ooa oob oof ooi ooo oor oot or- ora orb ore orf ori oro orr ort ot- ota otb ote otf oti oto otr ott ra- raa rab rae raf rai rao rar rat rba rbb rbe rbf rbi rbo rbr rbt re- rea reb ree ref rei reo rer ret rfa rfb rfe rff rfi rfo rfr rft ria rib rie rif rii rio rir rit roa rob roe rof roi roo ror rot rra rrb rrf rri rrr rrt rta rtb rte rtf rti rto rtr rtt taa tab tae taf tai tao tar tat tba tbb tbe tbf tbi tbo tbr tbt te- tea teb tee tef tei teo ter tet tfa tfb tfe tff tfi tfo tfr tft tia tib tie tif tii tio tir tit to- toa tob toe tof toi too tor tot tra trb tre trf tri tro trr trt tta ttb tte ttf tti tto ttr ttt

a-be a-ii aaaa aaab aaae aaaf aaai aaar aaba aabb aabi aabt aaea aafa aafb aaff aafi aaib aaii aaoe aaoo aara aare aari aaro aart aata aatf aatt abaa abab abae abaf abai abar abat abb- abba abbb abbe abbi abbo abbr abbt abee aber abet abff abia abib abie abir abit aboa abob abof aboo abor abot abra abri abro abta aeaf aebi aeer aeio aeit aer- aera aeri aero aeta aetf aeto aetr aett afaa afao afar afat afee afer afet affa affi affo afft afia afib afif afir afit afoa afoe afoo afor afr- afra afre afri afro afta afte aiai aiba aibo aiea aiee aiet aiff aiia aiib aiir aioi aira aire airi airo airt aita aite aitf aiti aitr aitt aoba aora aorb aort aotf arab arae araf arai arar arat arba arbe arbi area aree aref arei areo aret arfa arfb arff arft aria arib arie arif arii ario arit aroa arob aroe aroi aroo aror arr- arra arre arri arro arrr arrt arta arte arti arto artr at-t ataa atab atae atai atar atat atea atee atef atei ateo ater atfb atfe atia atie atif atit atob atoe atof atoi ator atot atra atre atri atro atta atte atti atto attr ba-i baaa baaf baar baat baba babb babe babi babo babr baer baff bafo baft baia baib baie baio bair bait bar- bara barb bare barf bari baro barr bart bata bate batf bati bato batt bbbb bbeb bbet beaf bear beat beba bebb bebe bebi bebo beeb beef beer beet befa befe beff befo beft beia beir beit beo- beof beor beot bera bere beri bero berr bert beta bete beti beto bett bfta bftt biaf biao biar biat biba bibb bibe bibi bibo bieb bief bier biet bifa biff bifi bio- bioi biot bira birb bire biri biro birr birt bita bite bito bitt boab boai boar boat boba bobb bobe bobi bobo boea boee boef boeo boer boet bofa bofe boff boi- boie boii boit boob booe boof boor boot bor- bora bore borf bori boro borr bort bota botb bote boti boto bott brab brae braf brai brao brat brea breb bree bref brei breo brer bret bria brie brio brit broa brob broe broo bror brot brrr btaa btaf btie btob btor btrt bttb eaaf eaba eafb eaif eara earb eare earo eart eata eate eati ebba ebbo ebbr eber ebit eboe eboo ebor ebro eeea eeee eefa eefe eera eero eeta eete efab efbr efeo efet effa effi efit efor eft- efta eiao eiei eier eira eire eita eitb eiti eito eitr eoir eora eore eori eota eoto eraf erat erba erbb erbe ereb erei erer eret erft eria erie erio erit erob eroe eroi eroo erra erre erro erta etai etat etbr