a-a a-b a-t aaa aab aag aam aan aao aar aas aat ab- aba abb abg abm abn abo abr abs abt ag- aga agb agg agm agn ago agr ags agt ama amb amg amm amn amo amr ams amt an- ana anb ang anm ann ano anr ans ant aoa aob aog aom aon aoo aor aos aot ar- ara arb arg arm arn aro arr ars art as- asa asb asg asm asn aso asr ass ast at- ata atb atg atm atn ato atr ats att baa bab bag bam ban bao bar bas bat bba bbb bbg bbm bbn bbo bbr bbs bbt bga bgb bgg bgm bgn bgo bgr bgs bgt bma bmb bmg bmm bmn bmo bmr bms bmt bna bnb bng bnn bno bnr bns bnt boa bob bog bom bon boo bor bos bot bra brb brg brm brn bro brr brs brt bsa bsb bsg bsm bsn bso bsr bss bst bta btb btg btm btn bto btr bts btt gaa gab gag gam gan gao gar gas gat gba gbg gbm gbn gbo gbr gbs gbt gga ggb ggg ggm ggn ggo ggr ggs ggt gma gmb gmg gmm gmn gmo gmr gms gmt gna gnb gnm gnn gno gnr gns gnt goa gob gog gom gon goo gor gos got gra grb grg grm grn gro grr grs grt gsa gsb gsg gsm gsn gso gsr gss gst gta gtb gtg gtm gtn gto gtr gts gtt m-o m-r maa mab mag mam man mao mar mas mat mba mbb mbg mbm mbo mbr mbs mbt mga mgb mgm mgn mgo mgr mgs mgt mma mmb mmg mmm mmn mmo mmr mms mmt mna mnb mng mnm mnn mno mnr mns mnt moa mob mog mom mon moo mor mos mot mra mrb mrg mrm mrn mro mrr mrs mrt msa msb msg msm msn mso msr mss mst mta mtb mtg mtm mtn mto mtr mts mtt naa nab nag nam nan nao nar nas nat nba nbb nbg nbm nbn nbo nbr nbs nbt nga ngb ngg ngm ngn ngo ngs ngt nma nmb nmg nmm nmn nmo nmr nms nmt nna nnb nng nnm nnn nno nns nnt no- noa nob nog nom non noo nor nos not nra nrb nrg nrm nrn nro nrr nrs nrt nsa nsb nsg nsm nsn nso nsr nss nst nta ntb ntg ntm ntn nto ntr nts ntt oaa oab oag oam oan oao oar oas oat ob- oba obb obg obm obn obo obr obs obt oga ogg ogn ogo ogs ogt om- oma omb omg omm omn omo omr oms omt on- ona onb ong onn ono onr ons ont oo- ooa oob oog oom oon ooo oor oos oot or- ora orb org orm orn oro orr ors ort os- osa osb osg osm osn oso osr oss ost ot- ota otb otg otm otn oto otr ots ott ra- raa rab rag ram ran rao rar ras rat rba rbb rbg rbm rbn rbo rbr rbs rbt rga rgb rgg rgn rgo rgr rgs rgt rma rmb rmg rmm rmn rmo rmr rms rmt rna rnb rng rnm rnn rno rnr rns rnt roa rob rog rom ron roo ror ros rot rra rrb rrg rrm rrn rrr rrs rrt rsa rsb rsg rsm rsn rso rsr rss rst rta rtb rtg rtm rtn rto rtr rts rtt saa sab sag sam san sao sar sas sat sba sbb sbg sbm sbn sbo sbr sbs sbt sga sgb sgg sgm sgn sgo sgr sgs sgt sma smb smg smm smn smo smr sms smt sna snb sng snm snn sno snr sns snt soa sob sog som son soo sor sos sot sr- sra srb srg srm srn sro srr srs srt ss- ssa ssb ssg ssm ssn sso ssr sss sst sta stb stg stm stn sto str sts stt taa tab tag tam tan tao tar tas tat tba tbb tbg tbm tbn tbo tbr tbs tbt tga tgb tgg tgm tgn tgo tgr tgs tgt tma tmb tmg tmm tmn tmo tmr tms tmt tna tnb tng tnm tnn tno tnr tns tnt to- toa tob tog tom ton too tor tos tot tra trb trg trm trn tro trr trs trt tsa tsb tsg tsm tsn tso tsr tss tst tta ttb ttg ttm ttn tto ttr tts ttt