a-a a-b a-c a-t aaa aab aac aam aao aap aar aas aat ab- aba abb abc abm abo abp abr abs abt ac- aca acb acc acm aco acp acr acs act ama amb amc amm amo amp amr ams amt aoa aob aoc aom aoo aop aor aos aot ap- apa apb apc apm apo app apr aps apt ar- ara arb arc arm aro arp arr ars art as- asa asb asc asm aso asp asr ass ast at- ata atb atc atm ato atp atr ats att b-p baa bab bac bam bao bap bar bas bat bba bbb bbc bbm bbo bbp bbr bbs bbt bca bcb bcc bcm bco bcp bcr bcs bct bma bmb bmc bmm bmo bmp bmr bms bmt boa bob boc bom boo bop bor bos bot bpa bpb bpc bpm bpo bpp bpr bps bpt bra brb brm bro brp brr brs brt bsa bsb bsc bsm bso bsp bsr bss bst bta btb btc btm bto btp btr bts btt c-- caa cab cac cam cao cap car cas cat cba cbb cbc cbm cbo cbp cbr cbs cbt cca ccb ccc ccm cco ccp ccr ccs cct cma cmb cmc cmm cmo cmp cmr cms cmt co- coa cob coc com coo cop cor cos cot cpa cpb cpc cpm cpo cpp cpr cps cpt cra crb crc crm cro crp crr crs crt csa csb csc csm cso csp csr css cst cta ctb ctc ctm cto ctp ctr cts ctt m-o m-r maa mab mac mam mao map mar mas mat mba mbb mbc mbm mbo mbp mbr mbs mbt mc- mca mcb mcc mcm mco mcp mcr mcs mct mma mmb mmc mmm mmo mmp mmr mms mmt moa mob moc mom moo mop mor mos mot mpa mpb mpc mpm mpo mpp mpr mps mpt mra mrb mrc mrm mro mrp mrr mrs mrt msa msb msc msm mso msp msr mss mst mta mtb mtc mtm mto mtp mtr mts mtt oaa oab oac oam oao oap oar oas oat ob- oba obb obc obm obo obp obr obs obt oc- oca ocb occ ocm oco ocp ocr ocs oct om- oma omb omc omm omo omp omr oms omt oo- ooa oob ooc oom ooo oop oor oos oot op- opa opb opc opm opo opp opr ops opt or- ora orb orc orm oro orp orr ors ort os- osa osb osc osm oso osp osr oss ost ot- ota otb otc otm oto otp otr ots ott p-p paa pab pac pam pao pap par pas pat pba pbb pbc pbm pbo pbp pbr pbs pbt pca pcb pcc pcm pco pcp pcr pcs pct pma pmb pmc pmm pmo pmp pmr pms pmt poa pob poc pom poo pop por pos pot ppa ppb ppc ppm ppo ppp ppr pps ppt pra prb prc prm pro prp prr prs prt ps- psa psb psc psm pso psp psr pss pst pt- pta ptb ptc ptm pto ptp ptr pts ptt ra- raa rab rac ram rao rap rar ras rat rba rbb rbc rbm rbo rbp rbr rbs rbt rca rcb rcc rcm rco rcp rcr rcs rct rma rmb rmc rmm rmo rmp rmr rms rmt roa rob roc rom roo rop ror ros rot rpa rpb rpc rpm rpo rpp rpr rps rpt rra rrb rrc rrm rrp rrr rrs rrt rsa rsb rsc rsm rso rsp rsr rss rst rta rtb rtc rtm rto rtp rtr rts rtt saa sab sac sam sao sap sar sas sat sba sbb sbc sbm sbo sbp sbr sbs sbt sca scb scc scm sco scp scr scs sct sma smb smc smm smo smp smr sms smt soa sob soc som soo sop sor sos sot spa spb spc spm spo spp spr sps spt sr- sra srb src srm sro srp srr srs srt ss- ssa ssb ssc ssm sso ssp ssr sss sst sta stb stc stm sto stp str sts stt taa tab tac tam tao tap tar tas tat tba tbb tbc tbm tbo tbp tbr tbs tbt tca tcb tcc tcm tco tcp tcr tcs tct tma tmb tmc tmm tmo tmp tmr tms tmt to- toa tob toc tom too top tor tos tot tpa tpb tpc tpm tpo tpp tpr tps tpt tra trb trc trm tro trp trr trs trt tsa tsb tsc tsm tso tsp tsr tss tst tta ttb ttc ttm tto ttp ttr tts ttt

aaaa aaab aaac aaam aaap aaar aaas aaba aabb aabc aabm aabp aabt aaca aacb aacc aacm aaco aacp aacr aacs aact aama aamb aamc aamo aamp aamr aams aaoo aapa aapc aapm aapo aaps aapt aara aarc aarm aaro aarp aars aart aasa aasc aasm aass aast aata aatc aatt abaa abab abac abam abap abar abas abat abb- abba abbb abbo abbr abbs abbt abca abcb abcc abcp abcr abcs abct abma abmb abmc abms abmt aboa abob aboo abor abos abot abpa abpc abpm abpp abpr abps abra abrc abro abrs abs- absa absp abss abta abts ac-t acaa acab acac acap acar acas acat acba acca accc accm acco accp accs acct acma acmc acmp acms acoa acom acop acor acos acot acpa acpm acpr acps acpt acr- acra acrc acrm acro acrr acrs acsa acsc acsm acss acst acta actc acto acts actt amaa amac amam amap amar amas amat amb- amba ambo ambr ambs amca amcc amco amcs amm- amma ammo amob amoc amoo amor amos amot ampa ampc ampm ampo amps ampt amra amrc amro amsa amsc amso amss amst amta amtc amto amtp amts aoba aoca aocs aoma aopo aora aorb aors aort aosp aoss aotc apac apam apao apap apar apas apat apba apbr apbs apca apcb apcc apcm apco apcr apcs apma apo- apoc apom apoo apop apor apos apot appa appc appr apps appt apra aprc apro aprs aprt apsa apso