a-a a-b a-t aaa aab aae aag aao aap aas aat ab- aba abb abe abg abo abp abs abt aea aeb aee aeg aeo aep aes aet ag- aga agb age agg ago agp ags agt aoa aob aoe aog aoo aop aos aot ap- apa apb ape apg apo app aps apt as- asa asb ase asg aso asp ass ast at- ata atb ate atg ato atp ats att b-p baa bab bae bag bao bap bas bat bba bbb bbe bbg bbo bbp bbs bbt be- bea beb bee beg beo bep bes bet bga bgb bge bgg bgo bgp bgs bgt boa bob boe bog boo bop bos bot bpa bpb bpe bpg bpo bpp bps bpt bsa bsb bse bsg bso bsp bss bst bta btb bte btg bto btp bts btt eaa eab eae eag eao eap eas eat eba ebb ebe ebg ebo ebp ebs ebt eea eeb eee eeg eeo eep ees eet ega egb ege egg ego egp egs egt eo- eoa eob eoe eog eoo eop eos eot ep- epa epb epe epg epo epp eps ept es- esa esb ese esg eso esp ess est eta etb ete etg eto etp ets ett g-p gaa gab gae gag gao gap gas gat gba gbe gbg gbo gbp gbs gbt ge- gea geb gee geg geo gep ges get gga ggb ggg ggo ggp ggs ggt goa gob goe gog goo gop gos got gpa gpb gpe gpg gpo gpp gps gpt gsa gsb gse gsg gso gsp gss gst gta gtb gte gtg gto gtp gts gtt oaa oab oae oag oao oap oas oat ob- oba obb obe obg obo obp obs obt oea oeb oee oeg oeo oep oes oet oga oge ogg ogo ogp ogs ogt oo- ooa oob oog ooo oop oos oot op- opa opb ope opg opo opp ops opt os- osa osb ose osg oso osp oss ost ot- ota otb ote otg oto otp ots ott p-p paa pab pae pag pao pap pas pat pba pbb pbe pbg pbo pbp pbs pbt pea peb pee peg peo pep pes pet pga pgb pge pgg pgo pgp pgs pgt poa pob poe pog poo pop pos pot ppa ppb ppe ppg ppo ppp pps ppt ps- psa psb pse psg pso psp pss pst pt- pta ptb pte ptg pto ptp pts ptt saa sab sae sag sao sap sas sat sba sbb sbe sbg sbo sbp sbs sbt se- sea seb see seg seo sep ses set sga sgb sge sgg sgo sgp sgs sgt soa sob soe sog soo sop sos sot spa spb spe spg spo spp sps spt ss- ssa ssb sse ssg sso ssp sss sst sta stb ste stg sto stp sts stt taa tab tae tag tao tap tas tat tba tbb tbe tbg tbo tbp tbs tbt te- tea teb tee teg teo tep tes tet tga tgb tge tgg tgo tgp tgs tgt to- toa tob toe tog too top tos tot tpa tpb tpe tpg tpo tpp tps tpt tsa tsb tse tsg tso tsp tss tst tta ttb tte ttg tto ttp tts ttt