-up a-a a-b a-c a-t aaa aab aac aap aas aat aau ab- aba abb abc abp abs abt abu ac- aca acb acc acp acs act acu ap- apa apb apc app aps apt apu as- asa asb asc asp ass ast asu at- ata atb atc atp ats att atu au- aua aub auc aup aus aut b-p b-u baa bab bac bap bas bat bau bba bbb bbc bbp bbs bbt bbu bca bcb bcc bcp bcs bct bcu bpa bpb bpc bpp bps bpt bpu bsa bsb bsc bsp bss bst bsu bta btb btc btp bts btt btu bua bub buc bup bus but buu c-- caa cab cac cap cas cat cau cba cbb cbc cbp cbs cbt cbu cca ccb ccc ccp ccs cct ccu cpa cpb cpc cpp cps cpt cpu csa csb csc csp css cst csu cta ctb ctc ctp cts ctt ctu cua cub cuc cup cus cut cuu p-p paa pab pac pap pas pat pau pba pbb pbc pbp pbs pbt pbu pca pcb pcc pcp pcs pct pcu ppa ppb ppc ppp pps ppt ppu ps- psa psb psc psp pss pst psu pt- pta ptb ptc ptp pts ptt ptu pua pub puc pup pus put puu saa sab sac sap sas sat sau sba sbb sbc sbp sbs sbt sbu sca scb scc scp scs sct scu spa spb spc spp sps spt spu ss- ssa ssb ssc ssp sss sst ssu sta stb stc stp sts stt stu sua sub suc sup sus sut suu taa tab tac tap tas tat tau tba tbb tbc tbp tbs tbt tbu tca tcb tcc tcp tcs tct tcu tpa tpb tpc tpp tps tpt tpu tsa tsb tsc tsp tss tst tsu tta ttb ttc ttp tts ttt ttu tua tub tuc tup tus tut tuu ua- uaa uab uac uap uas uat uau uba ubb ubc ubp ubs ubt ubu uca ucb ucc ucp ucs uct ucu up- upa upb upc upp ups upt upu usa usb usc usp uss ust usu uta utb utc utp uts utt utu uua uuc uus uut uuu

aaaa aaab aaac aaap aaas aaba aabb aabc aabp aabt aaca aacb aacc aacp aacs aact aacu aapa aapc aaps aapt aasa aasc aass aast aasu aata aatc aatt aaup aaus abaa abab abac 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 abus abut ac-t acaa acab acac acap acas acat acba acca accc accp accs acct accu acpa acps acpt acpu acsa acsc acss acst acta actc acts actt actu acu- acup acus acut apac 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 asap asas asat asau asba asbu asc- asca ascb ascc ascp asct aspa aspc asps aspt assa assc assp asss asst assu asta astb astc astp asts asub asus at-t ataa atab atac atap atas atat atbs atca atcc atcs atsb atsc atst atta attp atts attu atua atub atuc atus auaa auca aucp auct aupc aups ausa aust ausu aut- auts baaa baas baat baba babb babs babu bac- baca bacc bacs bact bapa bapc bapp baps bapt bapu basa basc bass bast basu bata batc bats batt batu bau- bbas bbau bbbb bbbs bcaa bcap bcas bcat bcbc bcbp bcbs bcca bccc bccs bcpp bcps bcsa bcsc bcss bctc bcts bcuc bcup bpcp bpsa bpsu bsaa bsac bsap bsas bsat bscp bscs bspp bssc bsts bsup btaa btbp btcc btcs btps btss bttb btus buat buba bubb bubs bubu buca bucc bucs bucu bupa bupc bups busa busc buss bust busu but- buta buts butt buus caaa caab caac caap caas caat caba cabs cabu cac- caca cacc capa capb capc capp caps capt capu casa casb casc casp cass cast casu cat- cata catb catc cats catt catu cauc caup caus caut cbac cbat cbbc cbbs cbca cbcc cbcp cbcs cbct cbcu 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 cpaa cpac cpap cpas cpbc cpca cpcs cpcu cppa cpps cpsa cpsc cpsu cptp cpts cpus csaa csab csac csas csat cscb cscc cscs 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 cubb cubs cuca cucc cupp cups cusa cusb cusp cuss cust cusu cut- cuta cutc cuts cutt paap paas paat paba pabt pabu paca pacs pact pacu papa papb papp paps pasa pasc pasp pass past pata pats patt patu paua paup paus paut pbac pbcc pbpa pbsa pbsp pcaa pcap pcas pcba pcbc pcbs pcca pccc pccs pcpb pcpp pcps pcsa pcts ppac ppap ppcc ppcs pppa pppp ppps ppss ppta ppts pptt psac psap psas psat psbt psca pscu pspp psps pssa pssc psst psts pstu ptab ptas ptca ptcc ptsa pttc puas pubs pubu puca pupa pups pupu pusa puss pust put- puta puts putt putu puuc sa-c saab saac saap saas saat saba sabb sabc sabs sabu saca sacc sacs sact sacu sapa sapp saps sasa sasc sass sast sata satb satc sats satt satu saua sauc saup saus saut sbaa sbac sbas sbbs sbca sbcc sbcs sbct sbsa sbsp sbst sbtc sbus scaa scab scac scap scas scat scba sccc sccp sccs scct scpa scpb scps scpt scsa scsc scst scsu sctc scts scua scub scup scut sp-a spac spap spas spat spau spca spcc spcs spps spsa spsp spss spst spta sptb sptc spts spus sput ssaa ssab ssac ssap ssas ssat ssau ssca sscc sscp sscs sspa sspc ssps sspt sssa sssb sssc ssss ssta sstb sstc