a-a a-b a-c a-t aaa aab aac aae aaj aam aao aas aat ab- aba abb abc abe abj abm abo abs abt ac- aca acb acc ace acj acm aco acs act aea aeb aec aee aej aem aeo aes aet aja ajb ajc aje ajj ajm ajo ajs ajt ama amb amc ame amm amo ams amt aoa aob aoc aoe aoj aom aoo aos aot as- asa asb asc ase asj asm aso ass ast at- ata atb atc ate atm ato ats att baa bab bac bae baj bam bao bas bat bba bbb bbc bbe bbm bbo bbs bbt bca bcb bcc bce bcj bcm bco bcs bct be- bea beb bec bee bem beo bes bet bja bjc bjj bjm bjs bjt bma bmb bmc bme bmj bmm bmo bms bmt boa bob boc boe boj bom boo bos bot bsa bsb bsc bse bsj bsm bso bss bst bta btb btc bte btm bto bts btt c-- c-j caa cab cac cae caj cam cao cas cat cba cbb cbc cbe cbj cbm cbo cbs cbt cca ccb ccc cce ccj ccm cco ccs cct ce- cea ceb cec cee cej cem ceo ces cet cja cjb cjc cjs cma cmb cmc cme cmj cmm cmo cms cmt co- coa cob coc coe coj com coo cos cot csa csb csc cse csj csm cso css cst cta ctb ctc cte ctm cto cts ctt eaa eab eac eae eaj eam eao eas eat eba ebb ebc ebe ebj ebm ebo ebs ebt ec- eca ecb ecc ece ecj ecm eco ecs ect eea eeb eec eee eem eeo ees eet eja ejc ejo ejt em- ema emb emc eme emm emo ems emt eo- eoa eob eoc eoe eom eoo eos eot es- esa esb esc ese esm eso ess est eta etb etc ete etj etm eto ets ett jaa jab jac jae jaj jam jao jas jat jba jbc jbj jbm jbo jbs jbt jca jcb jcc jce jcm jco jcs jct jea jeb jec jee jej jem jeo jes jet jja jjb jjc jjj jjs jma jmb jmc jme jmj jmm jmo jms jmt joa job joc joe joj jom joo jos jot jsa jsb jsc jse jsj jsm jso jss jst jta jtb jtc jte jtm jts jtt m-o maa mab mac mae maj mam mao mas mat mba mbb mbc mbe mbj mbm mbo mbs mbt mc- mca mcb mcc mce mcm mco mcs mct mea meb mec mee mej mem meo mes met mjb mjc mje mjj mjm mjs mjt mma mmb mmc mme mmj mmm mmo mms mmt moa mob moc moe mom moo mos mot msa msb msc mse msj msm mso mss mst mta mtb mtc mte mtj mtm mto mts mtt oaa oab oac oae oaj oam oao oas oat ob- oba obb obc obe obj obm obo obs obt oc- oca ocb occ ocj ocm oco ocs oct oea oeb oec oee oem oeo oes oet oja ojb ojc oje ojm ojo ojs om- oma omb omc ome omj omm omo oms omt oo- ooa oob ooc oom ooo oos oot os- osa osb osc ose osj osm oso oss ost ot- ota otb otc ote otm oto ots ott saa sab sac sae saj sam sao sas sat sba sbb sbc sbe sbj sbm sbo sbs sbt sca scb scc sce scj scm sco scs sct se- sea seb sec see sej sem seo ses set sja sjb sjc sje sjj sjm sjs sjt sma smb smc sme smm smo sms smt soa sob soc soe soj som soo sos sot ss- ssa ssb ssc sse ssj ssm sso sss sst sta stb stc ste stj stm sto sts stt taa tab tac tae taj tam tao tas tat tba tbb tbc tbe tbj tbm tbo tbs tbt tca tcb tcc tce tcj tcm tco tcs tct te- tea teb tec tee tej tem teo tes tet tjc tje tjm tjo tjs tma tmb tmc tme tmj tmm tmo tms tmt to- toa tob toc toe toj tom too tos tot tsa tsb tsc tse tsj tsm tso tss tst tta ttb ttc tte ttm tto tts ttt