-er a-a a-b a-i a-t aaa aab aae aai aao aar aat aax ab- aba abb abe abi abo abr abt abx aea aeb aee aei aeo aer aet aex ai- aia aib aie aii aio air ait aix aoa aob aoe aoi aoo aor aot aox ar- ara arb are ari aro arr art arx at- ata atb ate ati ato atr att atx ax- axa axe axi axo axr axt axx baa bab bae bai bao bar bat bax bba bbb bbe bbi bbo bbr bbt bbx be- bea beb bee bei beo ber bet bex bi- bia bib bie bii bio bir bit bix boa bob boe boi boo bor bot box bra brb bre bri bro brr brt brx bta btb bte bti bto btr btt btx bxb bxi bxo bxx eaa eab eae eai eao ear eat eax eba ebb ebe ebi ebo ebr ebt ebx eea eeb eee eeo eer eet eex eia eib eie eii eio eir eit eix eo- eoa eob eoe eoi eoo eor eot era erb ere eri ero err ert eta etb ete eti eto etr ett etx ex- exa exe exi exo exr ext exx ia- iaa iab iae iai iao iar iat iba ibb ibe ibi ibo ibr ibt ibx ie- iea iee iei ier iet iex iia iib iie iii iio iir iit iix io- ioa iob ioe ioi ioo ior iot ir- ira irb ire iri iro irr irt irx ita itb ite iti ito itt itx ixe ixi o-i oaa oab oae oai oao oar oat oax ob- oba obb obe obi obo obr obt obx oea oeb oee oei oeo oer oet oex oia oib oie oii oio oir oit oo- ooa oob ooi ooo oor oot oox or- ora orb ore ori oro orr ort orx ot- ota otb ote oti oto otr ott ox- oxa oxb oxi oxo oxt oxx ra- raa rab rae rai rao rar rat rax rba rbb rbe rbi rbo rbr rbt rbx re- rea reb ree rei reo rer ret rex ria rib rie rii rio rir rit rix roa rob roe roi roo ror rot rox rra rrb rri rrr rrt rta rtb rte rti rto rtr rtt rtx rxr t-x taa tab tae tai tao tar tat tax tba tbb tbe tbi tbo tbr tbt te- tea teb tee tei teo ter tet tex tia tib tie tii tio tir tit tix to- toa tob toe toi too tor tot tox tra trb tre tri tro trr trt trx tta ttb tte tti tto ttr ttt ttx txe txi txt xaa xar xat xbe xbr xbx xee xer xet xex xia xie xii xio xit xix xoa xoi xoo xor xot xox xrt xrx xti xtr xtx xxi xxo xxx

a-be a-ii aaaa aaab aaae aaai aaar aaba aabb aabi aabt aaea aaib aaii aaoe aaoo aara aare aari aaro aart aata aatt abaa abab abae abai abar abat abax abb- abba abbb abbe abbi abbo abbr abbt abee aber abet abia abib abie abir abit aboa abob aboo abor abot abox abra abri abro abta aebi aeer aeio aeit aer- aera aeri aero aeta aeto aetr aett aetx aiai aiba aibo aiea aiee aiet aiia aiib aiir aioi aira aire airi airo airt airx aita aite aiti aitr aitt aixa aixi aoba aora aorb aort arab arae arai arar arat arax arba arbe arbi area aree arei areo aret arex aria arib arie arii ario arit aroa arob aroe aroi aroo aror arr- arra arre arri arro arrr arrt arta arte arti arto artr artx at-t at-x ataa atab atae atai atar atat atax atea atee atei ateo ater atex atia atie atit atob atoe atoi ator atot atra atre atri atro atrx atta atte atti atto attr axar axat axer axi- axia axie axo- axoa axto axxo ba-i ba-x baaa baar baat baba babb babe babi babo babr baer baia baib baie baio bair bait baix bar- bara barb bare bari baro barr bart barx bata bate bati bato batt baxi baxt bbbb bbeb bbet bbox bear beat beba bebb bebe bebi bebo beeb beer beet beia beir beit beo- beor beot bera bere beri bero berr bert beta bete beti beto bett biao biar biat biba bibb bibe bibi bibo bieb bier biet bio- bioi biot biox bira birb bire biri biro birr birt birx bita bite bito bitt bitx bixa bixi boab boai boar boat boba bobb bobe bobi bobo boea boee boeo boer boet boi- boie boii boit boob booe boor boot boox bor- bora bore bori boro borr bort bota botb bote boti boto bott boxa brab brae brai brao brat brax brea breb bree brei breo brer bret brex bria brie brio brit brix broa brob broe broo bror brot brox brrr btaa btex btie btob btor btrt bttb eaba eara earb eare earo eart eata eate eati ebba ebbo ebbr eber ebit ebix eboe eboo ebor ebox ebro eeea eeee eera eero eeta eete eext eiao eiei eier eira eire eita eitb eiti eito eitr eoir eora eore eori eota eoto er-x erat erba erbb erbe ereb erei erer eret eria erie erio erit erob eroe eroi eroo erra erre erro erta etai etat etbr etee eter etio etix etoe etox etra etre etro etta ette etti etto exa- exai exer exit exo- exor exrx exta exte extr i-be iaaa iaai iaat iaba iaea iaia iara iare iart iata iate iati ibar ibat ibea ibet ibex ibia ibie ibot ibox ibra ibri ibro ibtb ieat ieet ieie ieio iera iere ieri ieta iett iiie iiii iiio iiit iioi iioo iira iita iitr iitt ioba iobi ioee ioii ioio ioit iooi iooo iora iore iori iota iote ioto irae irai irao irar irbe iree irer irex iri- iria irie irio irix irob irra irre irri irta irte irti itaa itai itar itat itbe itea iter itet itex itia itie itoi itoo itor itra itri itta itto ixia