a-ha aaaa aaab aaac aaah aaar aaba aabb aabc aabh aabt aaca aacb aacc aach aaco aacr aact aagh aaha aaoo aara aarc aaro aart aata aatc aatt abaa abab abac abag abar abat abb- abba abbb abbo abbr abbt abca abcb abcc abch abcr abct abha abho abhr aboa abob aboh aboo abor abot abra abrc abro abta ac-t acaa acab acac acag acar acat acba acca accc acch acco acct acga acgr acha achh acho achr acht acoa acog acoh acor acot acr- acra acrc acro acrr acta actc actg acth acto actt ag-o agac agag agao agar agat agba agbo agca agcc agco agct agga agha aght agob agog agoo agot agra agro agta agtr ahab ahac ahah ahar ahat ahha ahoa ahog ahor ahot ahra ahrc ahrr ahta ahto aoah aoba aoca aora aorb aort aotc arab arac arag arah arar arat arba arbh arc- arca arch arco arct arga argb argh argo arh- aroa arob aroo aror arr- arra arrc arrg arrh arro arrr arrt arta artc arth arto artr at-t ataa atab atac atar atat atca atcc atch atco atcr atgo atha atho atob atoc ator atot atra atrc atro atta atto attr baaa baah baar baat baba babb babo babr bac- baca bacc bach baco bact baga bagg bagh bago bagt baha baho bahr baht baoh bar- bara barb barc barg barh baro barr bart bata batc bath bato batt bbbb bbch bbga bbrc bbrg bcaa bcar bcat bcbc bcbg bcca bccc bcor bcra bctc bgca bght bhag bhao bhar bhat bhca bhcc bhog bhor bhot bhra bhrt boab boac boag boar boat boba bobb bobo boca boch boco boga bogg bogh bogo bogt boha boho bohr boht boob booc boog booh boor boot bor- bora borg borh boro borr bort bota botb both boto bott brab brac brag brah brao brat brca brcb broa brob broc brog broh broo bror brot brrr brtc btaa btcc btob btor btrc btrt bttb c-bo caaa caab caac caah caat caba cabg cabo cac- caca cacc cach caco cacr caga cagg cago cagr caha caht caor cara carb carc caro carr cart cat- cata catb catc cath cato catt cbac cbar cbat cbbc cbca cbcc cbcr cbct cbga cbgb cbha cbot cbrh cbrt cbta cbtc ccaa ccab ccac ccag ccar ccat ccba ccbc ccca cccb cccc ccga ccgc ccgt ccha cchr ccob ccoc ccra ccrc ccrg ccrt cctb cctc cctt cgac cgcc cgcg cgro chaa chab chac chag chah chao char chat chca chch chgb chha choc choh choo chor chra chrb chrc chro chrr chrt chto chtr chtt coag coat coba cobb cobh cobo coca coch coco coct cogh cogo coha coho coob cooh coot cor- cora corb corc corg coro corr cort cota cotb cotc coth coto cott crab crac crag crar crat crbc crca crcc crcr crob croc croh croo cror crot crrt crtc ctab ctag ctba ctca ctor ctot ctrc ctta gaar gaba gabb gabo gabr gabt gach gaga gagg gago gaha gaoh gara garb garg garo garr gart gata gatc gath gato gatr gatt gbag gbbo gc-c gcaa gcat gcbc gccc gcoa gcrg gctc ggbt gggg gghg ghar ghat goar goat goba gobo goca goch gocr goga gogh gogo goha gohb goog goor goot gora gorb gorg goro gorr gort gota goth goto gott grab grac grat grbr grcc grob groc grog groh groo gror grot grrr grtc gtaa gtbr gtco gtcr gtta haab haag haar haat haba habo habt haco hag- haga hagg hagh hago haha haho haht haor hara harc harh haro harr hart hata hatb hath hato hatt hbag hbar hboc hcat hcbc hcca hccb hccc hcch hcgh hgah hgar hggc hgtc hhaa hhat hhgg hhhh hoac hoag hoar hoat hoba hobo hoca hoch hocr hoga hogg hogh hogo hoha hoho hoor hoot hora horc horg horo horr hort hota hotb hoth hoto hotr hott hrac hrob hrrc hrta hrtb htab htcc htoh htra httr oara oath obba obbo obor obot obra obrh obro ocab ocac ocat ocbc occa occc occt ocga ocha ocht ocra ocro ocrr oct- octa octo ogar ogb ogba oght ogoa ogog ogra ogro ohba ohcc ohgr ohho ohob ohoh ohra ohta ohto ooaa ooba oocr ooha ooho oooh oooo oora oort ootb orab orac orah orao orar orat orba orbb orbo orca orch orco orga orgo oro- oror orot orra orro orta ortc orth orto otac otar otha otho othr oto- otog otoh otoo otor otra otro otta otto raab raag raat raba rabb rabo rac- raca racc rach raco ract raga ragg ragh rago raha rahr raht raob raoc raoh rara rarb raro rata rath rato ratt rbbb rbbr rbgh rboh rcac rcbc rcbo rccb rccc rcga rcgc rchb rcrg rctc rctg rgba rgtr rhag rhbg rhcg rhoa rhob rhoc rhog rhoh roab roag roar roat rob- roba robb robo robt roca rocc roch roco roga rogg rogh rogo roha rohr roob roog roor root rora rorc roro rort rota rotc rotg roth roto rotr rott rrah rrat rrrr rtca rtcc rtcg taa- taag taar taat taba tabb tabc tabo taca tacc tach taco tact taga tagg tagh tago taha taho tahr taoa taor tara tarb tarc targ taro tarr tart tata tatb tath tato tatr tatt tbar tbca tbcb tbcc tbrb tbta tcca tccc tcga tch- tcha tchh tcho tchr tctc tgcc tgtc thaa thag thao thar that thca thch thog thoo thor thot thra thro thtb thtr toab toat toba tobo tobt toca toch toco toga togh togo togr togt toho tooa tooh toor toot tora torc torg toro torr tort tota totc toth toto totr tott traa trab trac trag trao trat trca trcc troa troc trog troo trot trra trtc trtr ttab ttbb tttt