a-ha aaaa aaac aaah aaar aaca aacc aach aaco aacr aact aaha aaoo aara aarc aaro aart aata aatc aatt ac-t acaa acac acar acat acca accc acch acco acct acha achh acho achr acht acoa acoh acor acot acr- acra acrc acro acrr acta actc acth acto actt ahac ahah ahar ahat ahha ahoa ahor ahot ahra ahrc ahrr ahta ahto aoah aoca aora aort aotc arac arah arar arat arc- arca arch arco arct arh- aroa aroo aror arr- arra arrc arrh arro arrr arrt arta artc arth arto artr at-t ataa atac atar atat atca atcc atch atco atcr atha atho atoc ator atot atra atrc atro atta atto attr caaa caac caah caat cac- caca cacc cach caco cacr caha caht caor cara carc caro carr cart cat- cata catc cath cato catt ccaa ccac ccar ccat ccca cccc ccha cchr ccoc ccra ccrc ccrt cctc cctt chaa chac chah chao char chat chca chch chha choc choh choo chor chra chrc chro chrr chrt chto chtr chtt coat coca coch coco coct coha coho cooh coot cor- cora corc coro corr cort cota cotc coth coto cott crac crar crat crca crcc crcr croc croh croo cror crot crrt crtc ctca ctor ctot ctrc ctta haar haat haco haha haho haht haor hara harc harh haro harr hart hata hath hato hatt hcat hcca hccc hcch hhaa hhat hhhh hoac hoar hoat hoca hoch hocr hoha hoho hoor hoot hora horc horo horr hort hota hoth hoto hotr hott hrac hrrc hrta htcc htoh htra httr oara oath ocac ocat occa occc occt ocha ocht ocra ocro ocrr oct- octa octo ohcc ohho ohoh ohra ohta ohto ooaa oocr ooha ooho oooh oooo oora oort orac orah orao orar orat orca orch orco oro- oror orot orra orro orta ortc orth orto otac otar otha otho othr oto- otoh otoo otor otra otro otta otto raat rac- raca racc rach raco ract raha rahr raht raoc raoh rara raro rata rath rato ratt rcac rccc rctc rhoa rhoc rhoh roar roat roca rocc roch roco roha rohr roor root rora rorc roro rort rota rotc roth roto rotr rott rrah rrat rrrr rtca rtcc taa- taar taat taca tacc tach taco tact taha taho tahr taoa taor tara tarc taro tarr tart tata tath tato tatr tatt tcca tccc tch- tcha tchh tcho tchr tctc thaa thao thar that thca thch thoo thor thot thra thro thtr toat toca toch toco toho tooa tooh toor toot tora torc toro torr tort tota totc toth toto totr tott traa trac trao trat trca trcc troa troc troo trot trra trtc trtr tttt