a-ha aaaa aaac aaaf aaah aaca aacc aacf aach aaco aact aafa aafc aaff aaha aaoo aata aatc aatf aatt ac-t acaa acac acat acca accc accf acch acco acct acfc acft acha achh acho acht acoa acoh acot acta actc actf acth acto actt afaa afao afat afca afcc afch affa affc affo afft afoa afoo afta aftc ahac ahah ahat ahfa ahha ahoa ahot ahta ahto aoah aoca aotc aotf at-t ataa atac atat atca atcc atcf atch atco atfc atha atho atoc atof atot atta atto caaa caac caaf caah caat cac- caca cacc cach caco cafa cafc caff caha caht cat- cata catc catf cath cato catt ccaa ccac ccaf ccat ccca cccc cccf ccfa ccfc ccff ccha ccoc cctc cctt cfaa cfac cfao cfca cfcf cfco cfoa cfta cftc cfth chaa chac chaf chah chao chat chca chch chfa chfc chha choc choh choo chto chtt coat coca coch coco coct cofc coff coft coha coho coof cooh coot cota cotc coth coto cott ctca ctcf ctfc ctfo ctot ctta faaa faac faah faca facc fach fact fafa fafc faff fafo faha fata fatc fatf fath fato fatt fcat fcca fccf fcch fcot fcto ffcc ffff fftf foaf foca foch foco fofo foof foot fota foth foto fott ft-c ftfc haaf haat haco haff haft haha haho haht hata hath hato hatt hcat hcca hccc hcch hcfa hcfc hhaa hhat hhhh hhof hoac hoat hoca hoch hoff hoha hoho hoof hoot hota hoth hoto hott htcc htfc htoh oafc oafo oath ocac ocat occa occc occt ocfa ocha ocht oct- octa octo ofah off- offa offc offh offo ofta ohcc ohho ohoh ohta ohto ooaa ooff ooha ooho oooh oooo otac otfc otha otho oto- otof otoh otoo otta otto taa- taaf taat taca tacc tach taco tact tafa tafc taff tafo taft taha taho taoa tata tath tato tatt tcca tccc tcfc tch- tcha tchh tcho tctc tfca tfot tftc thaa thao that thca thch thof thoo thot toat toca toch toco tofa toff tofo toft toho tooa toof tooh toot tota totc toth toto tott ttfa ttfc ttff tttt