a-a a-b a-c a-t aaa aab aac aak aao aap aas aat ab- aba abb abc abk abo abp abs abt ac- aca acb acc ack aco acp acs act aka akb akc akk ako akp aks aoa aob aoc aok aoo aop aos aot ap- apa apb apc apk apo app aps apt as- asa asb asc ask aso asp ass ast at- ata atb atc ato atp ats att b-p baa bab bac bak bao bap bas bat bba bbb bbc bbk bbo bbp bbs bbt bca bcb bcc bck bco bcp bcs bct bka bkb bkc bkk bko bkp bks bkt boa bob boc bok boo bop bos bot bpa bpb bpc bpo bpp bps bpt bsa bsb bsc bsk bso bsp bss bst bta btb btc btk bto btp bts btt c-- caa cab cac cak cao cap cas cat cba cbb cbc cbk cbo cbp cbs cbt cca ccb ccc cck cco ccp ccs cct cka ckb ckc cko cks ckt co- coa cob coc cok coo cop cos cot cpa cpb cpc cpk cpo cpp cps cpt csa csb csc csk cso csp css cst cta ctb ctc ctk cto ctp cts ctt k-t ka- kaa kab kac kak kao kap kas kat kba kbb kbc kbk kbo kbp kbs kca kcb kcc kck kcp kcs kct kkb kkc kkk kkp kks kkt koa kob koc kok koo kop kos kot kpa kpc kpk kpo kpp kps kpt ksa ksb ksc ksk kso ksp kss kst kta ktb ktc ktk kto ktp kts ktt oaa oab oac oak oao oap oas oat ob- oba obb obc obk obo obp obs obt oc- oca ocb occ ock oco ocp ocs oct oka okb okc okk oko okp oks oo- ooa oob ooc ook ooo oop oos oot op- opa opb opc opk opo opp ops opt os- osa osb osc osk oso osp oss ost ot- ota otb otc otk oto otp ots ott p-p paa pab pac pak pao pap pas pat pba pbb pbc pbk pbo pbp pbs pbt pca pcb pcc pck pco pcp pcs pct pka pkb pkc pko pkp pks pkt poa pob poc pok poo pop pos pot ppa ppb ppc ppk ppo ppp pps ppt ps- psa psb psc psk pso psp pss pst pt- pta ptb ptc ptk pto ptp pts ptt saa sab sac sak sao sap sas sat sba sbb sbc sbk sbo sbp sbs sbt sca scb scc sck sco scp scs sct sk- ska skb skc skk sko skp sks skt soa sob soc sok soo sop sos sot spa spb spc spk spo spp sps spt ss- ssa ssb ssc ssk sso ssp sss sst sta stb stc stk sto stp sts stt taa tab tac tak tao tap tas tat tba tbb tbc tbk tbo tbp tbs tbt tca tcb tcc tck tco tcp tcs tct tka tkb tkc tkk tko tkp tks tkt to- toa tob toc tok too top tos tot tpa tpb tpc tpk tpo tpp tps tpt tsa tsb tsc tsk tso tsp tss tst tta ttb ttc ttk tto ttp tts ttt

a-ak a-ok aaaa aaab aaac aaap aaas aaba aabb aabc aabp aabt aaca aacb aacc aack aaco aacp aacs aact aaka aaoo aapa aapc aapo aaps aapt aasa aasc aass aast aata aatc aatk aatt abaa abab abac abak abap abas abat abb- abba abbb abbo abbs abbt abca abcb abcc abcp abcs abct aboa abob abok aboo abos abot abpa abpc abpp abps abs- absa absp abss abta abts ac-t acaa acab acac acap acas acat acba acca accc acco accp accs acct acks acoa acop acos acot acpa acps acpt acsa acsc acss acst acta actc acto acts actt akaa akao akap akas akca akka akko akok akos akot akpo aksa akst aoba aoca aocs aokp aoks aopo aosp aoss aotc apac apak apao apap apas apat apba apbs apca apcb apcc apco apcs apo- apoc apoo apop apos apot appa appc apps appt apsa apso apss apta aptc apts aptt asaa asab asac asak asao asap asas asat asba asbo asc- asca ascb ascc asco ascp asct aska asko asks askt asob asoc asok asop asos asot aspa aspc aspo asps aspt assa assc assk asso assp asss asst asta astb astc asto astp asts at-t ataa atab atac atak atap atas atat atbs atca atcc atck atco atcs atka atkt atob atoc atok atop atos atot atsb atsc atst atta atto attp atts baaa baak baas baat baba babb babo babs bac- baca bacc back baco bacs bact bak- baka bako baks bakt baos bapa bapc bapp baps bapt basa basc bask baso bass bast bata batc bato bats batt bbas bbbb bbbs bcaa bcap bcas bcat bcbc bcbp bcbs bcca bccc bccs bcos bcpp bcps bcsa bcsc bcss bctc bcts bkpt bksp boab boac boak boas boat boba bobb bobo bobs boca bock boco bocs boka boko boks boob booc book boop boos boot bopa bopp bops bosa bosc bosk boso boss bost bota botb boto bots bott bpcp bpot bpsa bsaa bsac bsap bsas bsat bscp bscs bskt bsos bspp bssc bsts btaa btbp btcc btcs btob btps btss bttb c-bo caaa caab caac caap caas caat caba cabo cabs cac- caca cacc cack caco caka caos capa capb capc capo capp caps capt casa casb casc cask caso casp cass cast cat- cata catb catc cato cats catt cbac cbat cbbc cbbs cbca cbcc cbcp cbcs cbct cbka cbko cbot cbpc cbpp cbsa cbsc cbta cbtc ccaa ccab ccac ccap ccas ccat ccba ccbc ccca cccb cccc cccp cccs ccob ccoc ccpa ccpp ccps ccsa ccsp ccss ccst cctb cctc cctt ckac ckat ckbc ckck ckco ckcs ckoa ckob ckoc ckoo ckos ckot ckpc cksa cksb ckso ckst cktb ckts coak coas coat coba cobb cobo cobs coca cock coco cocp coct cok- coka coko coob cook coop coos coot copa copo copp cops copt cosa cosc