a-a a-b a-t aaa aab aaf aam aao aar aat ab- aba abb abf abm abo abr abt af- afa afb aff afm afo afr aft ama amb amf amm amo amr amt aoa aob aof aom aoo aor aot ar- ara arb arf arm aro arr art at- ata atb atf atm ato atr att baa bab baf bam bao bar bat bba bbb bbf bbm bbo bbr bbt bfa bfb bff bfm bfo bfr bft bma bmb bmf bmm bmo bmr bmt boa bob bof bom boo bor bot bra brb brf brm bro brr brt bta btb btf btm bto btr btt faa fab faf fam fao far fat fba fbb fbf fbm fbo fbr fbt ffa fff ffm ffo ffr fft fma fmb fmf fmm fmo fmr fmt foa fob fof fom foo for fot fra frb frf frm fro frr frt fta ftb ftf ftm fto ftr ftt m-f m-o m-r maa mab maf mam mao mar mat mba mbb mbf mbm mbo mbr mbt mfa mfb mff mfm mfo mfr mft mma mmb mmf mmm mmo mmr mmt moa mob mof mom moo mor mot mra mrb mrf mrm mro mrr mrt mta mtb mtf mtm mto mtr mtt oaa oab oaf oam oao oar oat ob- oba obb obf obm obo obr obt of- ofa ofb off ofm ofo ofr oft om- oma omb omf omm omo omr omt oo- ooa oob oof oom ooo oor oot or- ora orb orf orm oro orr ort ot- ota otb otf otm oto otr ott ra- raa rab raf ram rao rar rat rba rbb rbf rbm rbo rbr rbt rfa rfb rff rfm rfo rfr rft rma rmb rmf rmm rmo rmr rmt roa rob rof rom roo ror rot rra rrb rrf rrm rrr rrt rta rtb rtf rtm rto rtr rtt taa tab taf tam tao tar tat tba tbb tbf tbm tbo tbr tbt tfa tfb tff tfm tfo tfr tft tma tmb tmf tmm tmo tmr tmt to- toa tob tof tom too tor tot tra trb trf trm tro trr trt tta ttb ttf ttm tto ttr ttt

aaaa aaab aaaf aaam aaar aaba aabb aabm aabt aafa aafb aaff aama aamb aamo aamr aaoo aara aarm aaro aart aata aatf aatt abaa abab abaf abam abar abat abb- abba abbb abbo abbr abbt abff abma abmb abmt aboa abob abof aboo abor abot abra abro abta afaa afam afao afar afat affa affo afft afma afoa afoo afor afr- afra afrm afro afta amaa amam amar amat amb- amba ambo ambr amfm amfr amm- amma ammo amob amof amoo amor amot amra amro amta amto aoba aoma aora aorb aort aotf arab araf aram arar arat arba arfa arfb arff arft arma armm armo armt aroa arob arom aroo aror arr- arra arro arrr arrt arta arto artr at-t ataa atab atar atat atfb atm- atma atmo atob atof atom ator atot atra atrm atro atta atto attr baaa baaf baam baar baat baba babb babm babo babr baff bafo baft bama bamb bamf bamm bar- bara barb barf barm baro barr bart bata batf bato batt bbbb bfta bftt bmaa boab boar boat boba bobb bobo bofa boff boma bomb bomt boob boof boom boor boot bor- bora borf borm boro borr bort bota botb boto bott brab braf bram brao brat brfm broa brob brom broo bror brot brrm brrr btaa btaf btob btor btrt bttb faaa faam faba fabm fabo fafa faff fafo fama famo fara farb farm faro farr fart fata fatf fato fatt fbar fbom ffar ffff ffrr fftf foaf foam foar foba fobt fofo foma fomo fomt foof foom foot for- fora forb form foro forr fort fota fotm foto fott frab fram frat frob from frot frta ftam maaa maaf maam maar maat maba mabo mafa mafb maff mama mamf mamo maor mar- mara marf marm maro marr mart mata mato matr matt mbam mbba mbta mfbm mffa mfor mftf mmaa mmab mmar mmff mmmm mmor mmrf moaa moab moaf moam moar moat moba mobb mobo mofa moff mofo moma momo mooa moob moor moot mora morb morf moro mort mota motb motm moto mott mrbb mrbm mrta mrtm mrtt mtaa mtab mtbo mtff mtoa mtom mtor mtrr mttr oafo oama oara obba obbo obor obot obra obro off- offa offo offr ofor ofra ofta omam omao omar ombo omma omo- omoa omoo omor omra omro ooaa ooba ooff ooma oooo oora oort ootb orab oram orao orar orat orba orbb orbo orff orma ormo oro- orof orom oror orot orra orro orta orto otar otma oto- otof otoo otor otra otro otta otto raab raaf raam raat raba rabb rabo rafa raff raft rama ramb ramm ramo raob raom rara rarb rarf raro rata ratf rato ratt rbaf rbbb rbbr rfam rmaf roab roaf roam roar roat rob- roba robb robo robt roff rofo roma romb romm romo roob roof room roor root rora roro rort rota roto rotr rott rrat rrrr rtbf rtfb rtfm t-mo taa- taaf taar taat taba tabb tabo tafa taff tafo taft tama tamm tamo taoa taom taor tara tarb tarf tarm taro tarr tart tata tatb tato tatr tatt tbaf tbar tbrb tbta tfam tfot tmaa tmbr tmro tmtt toab toam toat toba tobo tobt tofa toff tofo toft toma tomb tomm tomo tomt tooa toof toom toor toot tora torf torm toro torr tort tota totm toto totr tott traa trab traf tram trao trat trfm trfr trma trmb troa trom troo trot trra trtr ttab ttbb ttfa ttff ttma tttt

-aaa- -form a-ram aaaam aaata aabaa aabba aabra aabtm aafat aamot aamra aaram aarma aatma abaab ababa abaft abara abbar abbat abbot abfab aboab aboat abobo aboma abomb aboot abora abort abott abram abrar abtaa abtaf abtao abtar afara afarm affor afoam afoot afro- afrob aftab aftar aftra amama amara amaro amart amata amato ambam ambao ambar ambat ambot ambra amfam amfar