-up a-a a-b a-c a-t aaa aab aac aao aap aas aat aau ab- aba abb abc abo abp abs abt abu ac- aca acb acc aco acp acs act acu aoa aob aoc aoo aop aos aot aou ap- apa apb apc apo app aps apt apu as- asa asb asc aso asp ass ast asu at- ata atb atc ato atp ats att atu au- aua aub auc auo aup aus aut b-p b-u baa bab bac bao bap bas bat bau bba bbb bbc bbo bbp bbs bbt bbu bca bcb bcc bco bcp bcs bct bcu boa bob boc boo bop bos bot bou bpa bpb bpc bpo bpp bps bpt bpu bsa bsb bsc bso bsp bss bst bsu bta btb btc bto btp bts btt btu bua bub buc buo bup bus but buu c-- caa cab cac cao cap cas cat cau cba cbb cbc cbo cbp cbs cbt cbu cca ccb ccc cco ccp ccs cct ccu co- coa cob coc coo cop cos cot cou cpa cpb cpc cpo cpp cps cpt cpu csa csb csc cso csp css cst csu cta ctb ctc cto ctp cts ctt ctu cua cub cuc cuo cup cus cut cuu oaa oab oac oao oap oas oat oau ob- oba obb obc obo obp obs obt obu oc- oca ocb occ oco ocp ocs oct ocu oo- ooa oob ooc ooo oop oos oot op- opa opb opc opo opp ops opt os- osa osb osc oso osp oss ost osu ot- ota otb otc oto otp ots ott otu ou- oua ouc ouo oup ous out p-p paa pab pac pao pap pas pat pau pba pbb pbc pbo pbp pbs pbt pbu pca pcb pcc pco pcp pcs pct pcu poa pob poc poo pop pos pot pou ppa ppb ppc ppo ppp pps ppt ppu ps- psa psb psc pso psp pss pst psu pt- pta ptb ptc pto ptp pts ptt ptu pua pub puc pup pus put puu saa sab sac sao sap sas sat sau sba sbb sbc sbo sbp sbs sbt sbu sca scb scc sco scp scs sct scu soa sob soc soo sop sos sot sou spa spb spc spo spp sps spt spu ss- ssa ssb ssc sso ssp sss sst ssu sta stb stc sto stp sts stt stu sua sub suc suo sup sus sut suu taa tab tac tao tap tas tat tau tba tbb tbc tbo tbp tbs tbt tbu tca tcb tcc tco tcp tcs tct tcu to- toa tob toc too top tos tot tou tpa tpb tpc tpo tpp tps tpt tpu tsa tsb tsc tso tsp tss tst tsu tta ttb ttc tto ttp tts ttt ttu tua tub tuc tuo tup tus tut tuu ua- uaa uab uac uao uap uas uat uau uba ubb ubc ubo ubp ubs ubt ubu uca ucb ucc uco ucp ucs uct ucu uoa uob uoc uoo uop uos uot up- upa upb upc upo upp ups upt upu usa usb usc uso usp uss ust usu uta utb utc uto utp uts utt utu uua uuc uus uut uuu

-ous aaaa aaab aaac aaap aaas aaba aabb aabc aabp aabt aaca aacb aacc aaco aacp aacs aact aacu aaoo aapa aapc aapo aaps aapt aasa aasc aass aast aasu aata aatc aatt aaup aaus abaa abab abac abap abas abat abau abb- abba abbb abbo abbs abbt abca abcb abcc abcp abcs abct aboa abob aboo abos abot abou 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 acco accp accs acct accu acoa acop acos acot acou acpa acps acpt acpu acsa acsc acss acst acta actc acto acts actt actu acu- acuo acup acus acut aoba aoca aocs aopo aosp aoss aotc aous aout apac apao apap apas apat apba apbs apca apcb apcc apco apcs apo- apoc apoo apop apos apot apou appa appc apps appt appu apsa apso apss apsu apta aptc apts aptt apua apuc apup apus asaa asab asac asao asap asas asat asau asba asbo asbu asc- asca ascb ascc asco ascp asct asob asoc asop asos asot asou aspa aspc aspo asps aspt assa assc asso assp asss asst assu asta astb astc asto astp asts asub asus at-t ataa atab atac atap atas atat atbs atca atcc atco atcs atob atoc atop atos atot atsb atsc atst atta atto attp atts attu atua atub atuc atus auaa auca aucp auct aupc aups ausa aust ausu aut- auto auts baaa baas baat baba babb babo babs babu bac- baca bacc baco bacs bact baos bapa bapc bapp baps bapt bapu basa basc baso bass bast basu bata batc bato bats batt batu bau- bbas bbau bbbb bbbs bcaa bcap bcas bcat bcbc bcbp bcbs bcca bccc bccs bcos bcpp bcps bcsa bcsc bcss bctc bcts bcuc bcup boab boac boas boat boba bobb bobo bobs bobu boca boco bocs bocu boob booc boop boos boot bopa bopp bops bosa bosc boso boss bost bosu bota botb boto bots bott boua boup bous bout bpcp bpot bpsa bpsu bsaa bsac bsap bsas bsat bscp bscs bsos bspp bssc bsts bsup btaa btbp btcc btcs btob btps btss bttb btus buat buba bubb bubo bubs bubu buca bucc buco bucs bucu bupa bupc bups busa busc buss bust busu but- buta buto buts butt buus c-bo caaa caab caac caap caas caat caba cabo cabs cabu cac- caca cacc caco caos capa capb capc capo capp caps capt capu casa casb casc caso casp cass cast casu cat- cata catb catc cato cats catt catu cauc cauo caup caus caut cbac cbat cbbc cbbs cbca cbcc cbcp cbcs cbct cbcu cbot cbpc cbpp cbsa cbsc cbta cbtc cbus ccaa ccab ccac ccap ccas ccat ccba ccbc ccca cccb cccc cccp cccs cccu ccob ccoc ccpa ccpp