a-ha aaaa aaab aaac aaah aaap aaba aabb aabc aabh aabp aabt aaca aacb aacc aach aaco aacp aact aaha aaoo aapa aapc aaph aapo aapt aata aatc aatt abaa abab abac abap abat abb- abba abbb abbo abbt abca abcb abcc abch abcp abct abha abho aboa abob aboh aboo abot abpa abpc abpp abta ac-t acaa acab acac acap acat acba acca accc acch acco accp acct acha achh acho achp acht acoa acoh acop acot acpa acpt acta actc acth acto actt ahab ahac ahah ahat ahha ahoa ahop ahot ahta ahto aoah aoba aoca aopo aotc apac apah apao apap apat apba apca apcb apcc apco aph- apha aphc apo- apoc apoo apop apot appa appc apph appt apta aptc aptt at-t ataa atab atac atap atat atca atcc atch atco atha atho atob atoc atop atot atta atto attp baaa baah baat baba babb babo bac- baca bacc bach baco bact baha baho baht baoh bapa bapc bapp bapt bata batc bath bato batt bbbb bbch bcaa bcap bcat bcbc bcbp bcca bccc bcpp bctc bhao bhat bhca bhcc bhot boab boac boat boba bobb bobo boca boch boco boha boho boht boob booc booh boop boot bopa bopp bota botb both boto bott bpcp bphc bpot btaa btbp btcc btob bttb c-bo caaa caab caac caah caap caat caba cabo cac- caca cacc cach caco caha caht capa capb capc caph capo capp capt cat- cata catb catc cath cato catt cbac cbat cbbc cbca cbcc cbcp cbct cbha cbot cbpc cbpp cbta cbtc ccaa ccab ccac ccap ccat ccba ccbc ccca cccb cccc cccp ccha cchp ccob ccoc ccpa ccpp cctb cctc cctt chaa chab chac chah chao chap chat chbp chca chch chcp chha choc choh choo chop chpa chpp chto chtt coat coba cobb cobh cobo coca coch coco cocp coct coha coho coob cooh coop coot copa coph copo copp copt cota cotb cotc coth coto cott cpaa cpac cpap cpbc cpca cpha cppa cptp ctab ctba ctca ctcp ctot ctpo ctpp ctta haab haat haba habo habt haco haha haho haht hapa happ hata hatb hath hato hatt hboc hcap hcat hcbc hcca hccb hccc hcch hcpc hhaa hhat hhhh hhpa hhpc hhtp hoac hoap hoat hoba hobo hoca hoch hoha hoho hoop hoot hopa hopo hopp hopt hota hotb hoth hoto hotp hott hpac hpao hpcc hpot hpto htab htcc htcp htoh htop htpa htpc htpp http oahp oaph oath obba obbo obot ocab ocac ocap ocat ocbc occa occc occt ocha ocht ocpa ocpp oct- octa octo ohba ohcc ohho ohob ohoh ohta ohto ooaa ooba ooha ooho oooh oooo ootb ootp opah opap opca opo- oppa oppo opto otac otap otha otho oto- otoh otoo otpp otta otto paap paat paba pabt paca pach paco pact paha paho pahp paoc paoh papa papb papp pata path pato patt pbac pbcc pboc pbpa pcaa pcap pcba pcbc pcca pccc pcha pchp pcoa pcpb pcpp phah phat phcc phht phob phoh phoo phot phpa poat poba pobo poca poch poco poha pooh poop poot pop- popa popc popo popp popt pota potc poth poto pott ppac ppap ppcc ppoa pppa pppo pppp ppta pptt ptab ptah ptca ptcc ptop pttc taa- taat taba tabb tabc tabo taca tacc tach taco tact taha taho taoa tapa tapo tapp tapt tata tatb tath tato tatt tbca tbcb tbcc tbta tbtp tcap tcca tccc tch- tcha tchh tcho tchp tcpa tcpo tctc thaa thao that thca thch thhp thoo thot thpp thtb toab toat toba tobo tobt toca toch toco toho tooa tooh toot top- topa toph topo topp topt tota totc toth toto tott tpac tpap tpcp tppa tppp tptp ttab ttbb ttcp ttop tttt