-er a-a a-b a-t aaa aab aae aaf aao aar aat aax ab- aba abb abe abf abo abr abt abx aea aeb aee aef aeo aer aet aex af- afa afb afe aff afo afr aft afx aoa aob aoe aof aoo aor aot aox ar- ara arb are arf aro arr art arx at- ata atb ate atf ato atr att atx ax- axa axe axo axr axt axx baa bab bae baf bao bar bat bax bba bbb bbe bbf bbo bbr bbt bbx be- bea beb bee bef beo ber bet bex bfa bfb bfe bff bfo bfr bft bfx boa bob boe bof boo bor bot box bra brb bre brf bro brr brt brx bta btb bte btf bto btr btt btx bxb bxo bxx eaa eab eae eaf eao ear eat eax eba ebb ebe ebf ebo ebr ebt ebx eea eeb eee eef eeo eer eet eex ef- efa efb efe eff efo efr eft efx eo- eoa eob eoe eof eoo eor eot era erb ere erf ero err ert eta etb ete etf eto etr ett etx ex- exa exe exo exr ext exx faa fab fae faf fao far fat fax fba fbb fbe fbf fbo fbr fbt fbx fea feb fee fef feo fer fet fex ffa ffe fff ffo ffr fft ffx foa fob foe fof foo for fot fox fra frb fre frf fro frr frt fta ftb fte ftf fto ftr ftt ftx fxe fxr fxt fxx oaa oab oae oaf oao oar oat oax ob- oba obb obe obf obo obr obt obx oea oeb oee oef oeo oer oet oex of- ofa ofb ofe off ofo ofr oft ofx oo- ooa oob oof ooo oor oot oox or- ora orb ore orf oro orr ort orx ot- ota otb ote otf oto otr ott ox- oxa oxb oxf oxo oxt oxx ra- raa rab rae raf rao rar rat rax rba rbb rbe rbf rbo rbr rbt rbx re- rea reb ree ref reo rer ret rex rfa rfb rfe rff rfo rfr rft roa rob roe rof roo ror rot rox rra rrb rrf rrr rrt rta rtb rte rtf rto rtr rtt rtx rxr t-x taa tab tae taf tao tar tat tax tba tbb tbe tbf tbo tbr tbt te- tea teb tee tef teo ter tet tex tfa tfb tfe tff tfo tfr tft tfx to- toa tob toe tof too tor tot tox tra trb tre trf tro trr trt trx tta ttb tte ttf tto ttr ttt ttx txe txf txt xaa xaf xar xat xbe xbr xbx xee xer xet xex xfa xfe xft xfx xoa xof xoo xor xot xox xrf xrt xrx xtf xtr xtx xxo xxx

a-be aaaa aaab aaae aaaf aaar aaba aabb aabt aaea aafa aafb aaff aaoe aaoo aara aare aaro aart aata aatf aatt abaa abab abae abaf abar abat abax abb- abba abbb abbe abbo abbr abbt abee aber abet abff aboa abob abof aboo abor abot abox abra abro abta aeaf aeer aer- aera aero aeta aetf aeto aetr aett aetx afaa afao afar afat afee afer afet affa affo afft afoa afoe afoo afor afox afr- afra afre afro afta afte afxe aoba aora aorb aort aotf arab arae araf arar arat arax arba arbe area aree aref areo aret arex arfa arfb arff arft aroa arob aroe aroo aror arr- arra arre arro arrr arrt arta arte arto artr artx at-t at-x ataa atab atae atar atat atax atea atee atef ateo ater atex atfb atfe atob atoe atof ator atot atra atre atro atrx atta atte atto attr axaf axar axat axer axfr axo- axoa axof axto axxo ba-x baaa baaf baar baat baba babb babe babo babr baer baff bafo baft bar- bara barb bare barf baro barr bart barx bata bate batf bato batt baxt bbbb bbeb bbet bbox beaf bear beat beba bebb bebe bebo beeb beef beer beet befa befe beff befo beft beo- beof beor beot bera bere bero berr bert beta bete beto bett bfta bftt boab boar boat boba bobb bobe bobo boea boee boef boeo boer boet bofa bofe boff boob booe boof boor boot boox bor- bora bore borf boro borr bort bota botb bote boto bott boxa brab brae braf brao brat brax brea breb bree bref breo brer bret brex broa brob broe broo bror brot brox brrr btaa btaf btex btob btor btrt bttb eaaf eaba eafb eara earb eare earo eart eata eate ebba ebbo ebbr eber eboe eboo ebor ebox ebro eeea eeee eefa eefe eera eero eeta eete eext efab efax efbr efeo efet effa efor eft- efta eora eore eota eoto er-x eraf erat erba erbb erbe ereb erer eret erft erfx erob eroe eroo erra erre erro erta etat etbr etee eter etfa etfb etfe etoe etox etra etre etro etta ette etto exa- exer exfo exo- exor exrx exta exte extr faaa faba fabe fabo faeb faex fafa fafe faff fafo fara farb fare faro farr fart fata fate fatf fato fatt faxe fbar feaf fear feat feba febo feeb feer feet fefe feff fefo feof fera ferb fere fero ferr fert feta fete fetr fett fext ffar ffee ffff ffrr fftf foaf foar foba fobt foer fofo foof foot for- fora forb fore foro forr fort fota fote foto fott foxe foxx frab frae frat frax frea free freo fret frex frob froe frot frta ftea fter o-eo oaer oafo oara oare oate obba obbo obea ober obet obex oboe obor obot obox obra obre obro oeax oera oere oeta ofer off- offa offe offo offr ofor ofra ofre ofta ooaa ooba oobe ooer ooff oooo oora oore oort ootb orab orae orao orar orat orba orbb orbe orbo ore- orea oreb oreo orer orex orfe orff oro- oroe orof oror orot orra orro orta orte orto otar otea otee oter oto- otoe otof otoo