-up a-a a-b a-c a-t aaa aab aac aak aap aas aat aau ab- aba abb abc abk abp abs abt abu ac- aca acb acc ack acp acs act acu aka akb akc akk akp aks aku ap- apa apb apc apk app aps apt apu as- asa asb asc ask asp ass ast asu at- ata atb atc atp ats att atu au- aua aub auc auk aup aus aut b-p b-u baa bab bac bak bap bas bat bau bba bbb bbc bbk bbp bbs bbt bbu bca bcb bcc bck bcp bcs bct bcu bka bkb bkc bkk bkp bks bkt bpa bpb bpc bpp bps bpt bpu bsa bsb bsc bsk bsp bss bst bsu bta btb btc btk btp bts btt btu bua bub buc buk bup bus but buu c-- caa cab cac cak cap cas cat cau cba cbb cbc cbk cbp cbs cbt cbu cca ccb ccc cck ccp ccs cct ccu cka ckb ckc cks ckt cpa cpb cpc cpk cpp cps cpt cpu csa csb csc csk csp css cst csu cta ctb ctc ctk ctp cts ctt ctu cua cub cuc cuk cup cus cut cuu k-t ka- kaa kab kac kak kap kas kat kau kba kbb kbc kbk kbp kbs kbu kca kcb kcc kck kcp kcs kct kcu kkb kkc kkk kkp kks kkt kku kpa kpc kpk kpp kps kpt kpu ksa ksb ksc ksk ksp kss kst ksu kta ktb ktc ktk ktp kts ktt ktu kub kuc kuk kup kus kut kuu p-p paa pab pac pak pap pas pat pau pba pbb pbc pbk pbp pbs pbt pbu pca pcb pcc pck pcp pcs pct pcu pka pkb pkc pkp pks pkt pku ppa ppb ppc ppk ppp pps ppt ppu ps- psa psb psc psk psp pss pst psu pt- pta ptb ptc ptk ptp pts ptt ptu pua pub puc puk pup pus put puu saa sab sac sak sap sas sat sau sba sbb sbc sbk sbp sbs sbt sbu sca scb scc sck scp scs sct scu sk- ska skb skc skk skp sks skt sku spa spb spc spk spp sps spt spu ss- ssa ssb ssc ssk ssp sss sst ssu sta stb stc stk stp sts stt stu sua sub suc suk sup sus sut suu taa tab tac tak tap tas tat tau tba tbb tbc tbk tbp tbs tbt tbu tca tcb tcc tck tcp tcs tct tcu tka tkb tkc tkk tkp tks tkt tpa tpb tpc tpk tpp tps tpt tpu tsa tsb tsc tsk tsp tss tst tsu tta ttb ttc ttk ttp tts ttt ttu tua tub tuc tuk tup tus tut tuu ua- uaa uab uac uak uap uas uat uau uba ubb ubc ubk ubp ubs ubt ubu uca ucb ucc uck ucp ucs uct ucu uka ukb ukc ukk ukp uku up- upa upb upc upk upp ups upt upu usa usb usc usk usp uss ust usu uta utb utc utk utp uts utt utu uua uuc uus uut uuu

a-ak aaaa aaab aaac aaap aaas aaba aabb aabc aabp aabt aaca aacb aacc aack aacp aacs aact aacu aaka aaku aapa aapc aaps aapt aasa aasc aass aast aasu aata aatc aatk aatt aaup aaus abaa abab abac abak abap abas abat abau abb- abba abbb abbs abbt abca abcb abcc abcp abcs abct abpa abpc abpp abps abs- absa absp abss absu abta abts abtu abua abuk abus abut ac-t acaa acab acac acap acas acat acba acca accc accp accs acct accu acks acpa acps acpt acpu acsa acsc acss acst acta actc acts actt actu acu- acup acus acut akaa akap akas akca akka akku akpu aksa akst aksu akua apac apak apap apas apat apba apbs apca apcb apcc apcs appa appc apps appt appu apsa apss apsu apta aptc apts aptt apua apuc apup apus asaa asab asac asak asap asas asat asau asba asbu asc- asca ascb ascc ascp asct aska asks askt aspa aspc asps aspt assa assc assk assp asss asst assu asta astb astc astp asts asub asus at-t ataa atab atac atak atap atas atat atbs atca atcc atck atcs atka atkt atsb atsc atst atta attp atts attu atua atub atuc atuk atus auaa auca aucp auct auks aupc aups ausa aust ausu aut- auts baaa baak baas baat baba babb babs babu bac- baca bacc back bacs bact bak- baka baks bakt baku bapa bapc bapp baps bapt bapu basa basc bask bass bast basu bata batc bats batt batu bau- bauk bbas bbau bbbb bbbs bcaa bcap bcas bcat bcbc bcbp bcbs bcca bccc bccs bcpp bcps bcsa bcsc bcss bctc bcts bcuc bcup bkpt bksp bpcp bpsa bpsu bsaa bsac bsap bsas bsat bscp bscs bskt bspp bssc bsts bsup btaa btbp btcc btcs btps btss bttb btus buat buba bubb bubs bubu buca bucc buck bucs bucu buka bukk buku bupa bupc bups busa busc busk buss bust busu but- buta buts butt buus caaa caab caac caap caas caat caba cabs cabu cac- caca cacc cack caka capa capb capc capp caps capt capu casa casb casc cask casp cass cast casu cat- cata catb catc cats catt catu cauc cauk caup caus caut cbac cbat cbbc cbbs cbca cbcc cbcp cbcs cbct cbcu cbka cbpc cbpp cbsa cbsc cbta cbtc cbus ccaa ccab ccac ccap ccas ccat ccba ccbc ccca cccb cccc cccp cccs cccu ccpa ccpp ccps ccsa ccsp ccss ccst cctb cctc cctt ccuc ccup ccus ccut ckac ckat ckbc ckck ckcs ckpc cksa cksb ckst cktb ckts cpaa cpac cpap cpas cpbc cpca cpcs cpcu cppa cpps cpsa cpsc cpsk cpsu cptp cpts cpus csaa csab csac csak csas csat cscb cscc cscs cska csks cspa cspb cspc csps cspt cssa csta cstc csts csua csup csus ctab ctba ctbs ctca ctcp ctpp ctps ctsa ctsc ctss ctsu ctta ctts cuau cub- cuba