a-a a-b a-c a-t aaa aab aac aao aar aat ab- aba abb abc abo abr abt ac- aca acb acc aco acr act aoa aob aoc aoo aor aot ar- ara arb arc aro arr art at- ata atb atc ato atr att baa bab bac bao bar bat bba bbb bbc bbo bbr bbt bca bcb bcc bco bcr bct boa bob boc boo bor bot bra brb bro brr brt bta btb btc bto btr btt c-- caa cab cac cao car cat cba cbb cbc cbo cbr cbt cca ccb ccc cco ccr cct co- coa cob coc coo cor cot cra crb crc cro crr crt cta ctb ctc cto ctr ctt oaa oab oac oao oar oat ob- oba obb obc obo obr obt oc- oca ocb occ oco ocr oct oo- ooa oob ooc ooo oor oot or- ora orb orc oro orr ort ot- ota otb otc oto otr ott ra- raa rab rac rao rar rat rba rbb rbc rbo rbr rbt rca rcb rcc rco rcr rct roa rob roc roo ror rot rra rrb rrc rrr rrt rta rtb rtc rto rtr rtt taa tab tac tao tar tat tba tbb tbc tbo tbr tbt tca tcb tcc tco tcr tct to- toa tob toc too tor tot tra trb trc tro trr trt tta ttb ttc tto ttr ttt

aaaa aaab aaac aaar aaba aabb aabc aabt aaca aacb aacc aaco aacr aact aaoo aara aarc aaro aart aata aatc aatt abaa abab abac abar abat abb- abba abbb abbo abbr abbt abca abcb abcc abcr abct aboa abob aboo abor abot abra abrc abro abta ac-t acaa acab acac acar acat acba acca accc acco acct acoa acor acot acr- acra acrc acro acrr acta actc acto actt aoba aoca aora aorb aort aotc arab arac arar arat arba arc- arca arco arct aroa arob aroo aror arr- arra arrc arro arrr arrt arta artc arto artr at-t ataa atab atac atar atat atca atcc atco atcr atob atoc ator atot atra atrc atro atta atto attr baaa baar baat baba babb babo babr bac- baca bacc baco bact bar- bara barb barc baro barr bart bata batc bato batt bbbb bbrc bcaa bcar bcat bcbc bcca bccc bcor bcra bctc boab boac boar boat boba bobb bobo boca boco boob booc boor boot bor- bora boro borr bort bota botb boto bott brab brac brao brat brca brcb broa brob broc broo bror brot brrr brtc btaa btcc btob btor btrc btrt bttb c-bo caaa caab caac caat caba cabo cac- caca cacc caco cacr caor cara carb carc caro carr cart cat- cata catb catc cato catt cbac cbar cbat cbbc cbca cbcc cbcr cbct cbot cbrt cbta cbtc ccaa ccab ccac ccar ccat ccba ccbc ccca cccb cccc ccob ccoc ccra ccrc ccrt cctb cctc cctt coat coba cobb cobo coca coco coct coob coot cor- cora corb corc coro corr cort cota cotb cotc coto cott crab crac crar crat crbc crca crcc crcr crob croc croo cror crot crrt crtc ctab ctba ctca ctor ctot ctrc ctta oara obba obbo obor obot obra obro ocab ocac ocat ocbc occa occc occt ocra ocro ocrr oct- octa octo ooaa ooba oocr oooo oora oort ootb orab orac orao orar orat orba orbb orbo orca orco oro- oror orot orra orro orta ortc orto otac otar oto- otoo otor otra otro otta otto raab raat raba rabb rabo rac- raca racc raco ract raob raoc rara rarb raro rata rato ratt rbbb rbbr rcac rcbc rcbo rccb rccc rctc roab roar roat rob- roba robb robo robt roca rocc roco roob roor root rora rorc roro rort rota rotc roto rotr rott rrat rrrr rtca rtcc taa- taar taat taba tabb tabc tabo taca tacc taco tact taoa taor tara tarb tarc taro tarr tart tata tatb tato tatr tatt tbar tbca tbcb tbcc tbrb tbta tcca tccc tctc toab toat toba tobo tobt toca toco tooa toor toot tora torc toro torr tort tota totc toto totr tott traa trab trac trao trat trca trcc troa troc troo trot trra trtc trtr ttab ttbb tttt

-aaa- aaaoc aaarc aaata aabaa aabba aabra aacbc abaab ababa abaca abaco abara abbac abbar abbat abbot abccc aboab aboat abobo aboot abora aborc abort abott abrac abrar abtaa abtao abtar acaca acacb acar- acara accra acoat acoot acrab acro- acrob act-r actar actor actra actto aort- aorta ar-ab ara-c araat arab- araba arabo araca araco arara arata arbab arbar arbat arbor arbot arcoa arcor arcot arct- arcto aroab aroar aroba aroor aroot arora artar artat arto- artoo artot ataco atara atbar atbat atoot atora atoto atrab atro- atroa atrot attar atto- attra baart baata babar baboo babot babra bacab bacao bacar bacca bacco bacot bacta baoro baraa barab barac barao barar barat barba barca barco baro- baroa baroo baror barot barra barro barta barto batab batac batar batat batco batob batoo bator batra batta batto bbart bccat bo-bo boaco boaro boart bobac bobar boboc bobr bocac bocao bocar bocat bocca bocoa bocor booat booba booco boora boort boota borac borat borba borbo borca boro- boroa boroo borot borra borro botar botro botta braat braca bracc braco bract bratt brobo broca brora broto brrar brrrr btr-t c-a-c c-cor c-rat ca-ca caaba cabob caboc cabot cabra cacao caco- cacoa caoba caraa carab carac carat carb- carbo caroa carob carot carra carro carrt carta carto cata- catco cato- cator catra catta catto ccccc co-bo co-co coact coarb coarc coart coatc cobar cobot cobra cocao cocc- cocco cocoa cocto cooba corat corba corbo corca coro- corot corra corto cott- cotta cotto craba crabb craco crato croat croco croot crott o-r-b oarac oaror obaba obara obata obora oboro obrab obrat ocara ocaro occar occra ocora ocr-a ocr-b ocrat octa- octar octo- octor ooooo oraba orara orato orbot orobo oroco orrca ortac ortoo otara otcbb otoba ototo otrar ottar r-co- ra-ra raaba raaor