-up a-a a-b a-c a-q aaa aab aac aak aap aaq aas aau ab- aba abb abc abk abp abq abs abu ac- aca acb acc ack acp acq acs acu aka akb akc akk akp aks aku ap- apa apb apc apk app apq aps apu aqa aqc aqp aqs as- asa asb asc ask asp asq ass asu au- aua aub auc auk aup aus b-p b-u baa bab bac bak bap baq bas bau bba bbb bbc bbk bbp bbq bbs bbu bca bcb bcc bck bcp bcq bcs bcu bka bkb bkc bkk bkp bkq bks bpa bpb bpc bpp bps bpu bqc bqp bsa bsb bsc bsk bsp bss bsu bua bub buc buk bup bus buu c-- caa cab cac cak cap caq cas cau cba cbb cbc cbk cbp cbq cbs cbu cca ccb ccc cck ccp ccs ccu cka ckb ckc cks cpa cpb cpc cpk cpp cpq cps cpu cqa cqb cqc cqs csa csb csc csk csp csq css csu cua cub cuc cuk cup cuq cus cuu ka- kaa kab kac kak kap kas kau kba kbb kbc kbk kbp kbs kbu kca kcb kcc kck kcp kcs kcu kkb kkc kkk kkp kks kku kpa kpc kpk kpp kpq kps kpu kqa ksa ksb ksc ksk ksp kss ksu kub kuc kuk kup kus kuu p-p paa pab pac pak pap paq pas pau pba pbb pbc pbk pbp pbs pbu pca pcb pcc pck pcp pcq pcs pcu pka pkb pkc pkp pks pku ppa ppb ppc ppk ppp ppq pps ppu pqq pqs ps- psa psb psc psk psp pss psu pua pub puc puk pup pus puu qaa qac qap qas qau qba qbc qbq qbs qca qcc qcp qcs qpc qpp qps qqk qqq qqu qsa qsc qsp qu- qua qus saa sab sac sak sap saq sas sau sba sbb sbc sbk sbp sbq sbs sbu sca scb scc sck scp scs scu sk- ska skb skc skk skp skq sks sku spa spb spc spk spp spq sps spu sqa sqq sqs ss- ssa ssb ssc ssk ssp ssq sss ssu sua sub suc suk sup suq sus suu ua- uaa uab uac uak uap uaq uas uau uba ubb ubc ubk ubp ubs ubu uca ucb ucc uck ucp ucs ucu uka ukb ukc ukk ukp uku up- upa upb upc upk upp ups upu usa usb usc usk usp uss usu uua uuc uus uuu

a-ak aaaa aaab aaac aaap aaas aaba aabb aabc aabp aaca aacb aacc aack aacp aacs aacu aaka aaku aapa aapc aaps aasa aasc aass aasu aaup aaus abaa abab abac abak abap abas abau abb- abba abbb abbs abca abcb abcc abcp abcs abpa abpc abpp abps abs- absa absp abss absu abua abuk abus acaa acab acac acap acas acba acca accc accp accs accu acks acpa acps acpu acsa acsc acss acu- acup acus akaa akap akas akca akka akku akpu akqa aksa aksu akua apac apak apap apas apba apbs apca apcb apcc apcs appa appc apps appu apsa apss apsu apua apuc apup apus aqap aqas aqps aqsa aqu- aqua asaa asab asac asak asap asas asau asba asbu asc- asca ascb ascc ascp ascq aska asks aspa aspc asps asqc assa assc assk assp assq asss assu asub asus auaa auca aucp auks aupc aups ausa ausu baaa baak baas baba babb babs babu bac- baca bacc back bacs bak- baka baks baku bapa bapc bapp baps bapu baqa basa basc bask bass basu bau- bauk bbas bbau bbbb bbbq bbbs bbqs bcaa bcap bcas bcbc bcbp bcbs bcca bccc bccs bcpp bcps bcsa bcsc bcss bcuc bcup bksp bpcp bpsa bpsu bsaa bsac bsap bsas bscp bscs bspp bssc bsup buba bubb bubq bubs bubu buca bucc buck bucs bucu buka bukk buku bupa bupc bups buqa busa busc busk buss busu buus caaa caab caac caap caas caba cabs cabu cac- caca cacc cack caka capa capb capc capp caps capu casa casb casc cask casp cass casu cauc cauk caup caus cbac cbbc cbbs cbca cbcc cbcp cbcs cbcu cbka cbpc cbpp cbsa cbsc cbus ccaa ccab ccac ccap ccas ccba ccbc ccca cccb cccc cccp cccs cccu ccpa ccpp ccps ccsa ccsp ccss ccuc ccup ccus ckac ckbc ckck ckcs ckpc cksa cksb cpaa cpac cpap cpas cpbc cpca cpcs cpcu cppa cpps cpsa cpsc cpsk cpsu cpus csaa csab csac csak csas cscb cscc cscs cska csks cspa cspb cspc csps cssa csua csup csus cuau cub- cuba cubb cubs cuca cucc cuck cucq cuk- cuka cupp cups cusa cusb cusk cusp cuss cusu kaaa kaab kaak kaap kaaq kaas kaba kabb kabc kabq kabu kacb kacc kacp kacq kacs kacu kaka kakc kakk kaks kaku kap- kapa kapc kapp kaps kapu kas- kasa kasb kasc kask kasp kass kasu kau- kaub kauc kauk kaup kaus kbaa kbab kbac kbak kbap kbaq kbas kbba kbbb kbbc kbbk kbbs kbbu kbca kbcb kbck kbcq kbcs kbcu kbkb kbkk kbpa kbpc kbpk kbps kbpu kbqb kbsa kbsb kbsk kbsq kbss kbsu kbua kbub kbuc kbuk kbup kbus kbuu kcaa kcab kcac kcap kcaq kcas kcau kcba kcbc kcbk kcbq kcbs kcbu kcca kccb kccc kcck kccu kckc kckk kcpa kcpc kcpq kcps kcpu kcqq kcsa kcsb kcsc kcsp kcss kcsu kcua kcub kcuk kcup kkaa kkac kkap kkaq kkba kkbb kkbq kkbs kkcb kkck kkcq kkcs kkkk kkpc kkpk kkps kkqq kksa kksp kkss kksu kkua kkup kkus kkuu kpac kpak kpas kpau kpba kpbb kpbs kpcc kpcs kpkk kppc kppk kppp kpsc kpsp kpsu kpua kpub kpus kqac kqak kqaq kqba kqbb kqbk kqbu kqca kqck kqcs kqkk kqks kqqa kqqk kqqq kqqs kqsc kqsk kqsp kqss kqup ksab ksac ksak ksaq ksas ksau ksba ksbc ksbp ksbq ksbs ksca kscb ksck kscq kscs kscu kska kskb kskk kskq ksks ksku kspa kspb kspc kspk kspq ksps ksqa ksqb ksqq ksqs kssa kssq ksss kssu