a-a a-b a-t aaa aab aad aag aan aao aar aas aat ab- aba abb abd abg abn abo abr abs abt ad- ada adb add adg adn ado adr ads adt ag- aga agb agd agg agn ago agr ags agt an- ana anb and ang ann ano anr ans ant aoa aob aod aog aon aoo aor aos aot ar- ara arb ard arg arn aro arr ars art as- asa asb asd asg asn aso asr ass ast at- ata atb atd atg atn ato atr ats att baa bab bad bag ban bao bar bas bat bba bbb bbd bbg bbn bbo bbr bbs bbt bda bdb bdd bdg bdo bdr bds bdt bga bgb bgd bgg bgn bgo bgr bgs bgt bna bnb bnd bng bnn bno bnr bns bnt boa bob bod bog bon boo bor bos bot bra brb brd brg brn bro brr brs brt bsa bsb bsd bsg bsn bso bsr bss bst bta btb btd btg btn bto btr bts btt daa dab dad dag dan dao dar das dat dba dbb dbd dbg dbn dbo dbr dbs dbt dda ddb ddd ddg ddn ddo ddr dds ddt dga dgd dgg dgn dgr dgs dgt dna dnb dnd dng dnn dno dnr dns dnt doa dob dod dog don doo dor dos dot dra drb drd drg drn dro drr drs drt dsa dsb dsd dsg dsn dso dsr dss dst dta dtb dtd dtg dtn dto dtr dts dtt g-d gaa gab gad gag gan gao gar gas gat gba gbd gbg gbn gbo gbr gbs gbt gda gdb gdd gdn gdo gdr gds gdt gga ggb ggd ggg ggn ggo ggr ggs ggt gna gnb gnd gnn gno gnr gns gnt goa gob god gog gon goo gor gos got gra grb grd grg grn gro grr grs grt gsa gsb gsd gsg gsn gso gsr gss gst gta gtb gtd gtg gtn gto gtr gts gtt naa nab nad nag nan nao nar nas nat nba nbb nbd nbg nbn nbo nbr nbs nbt nda ndb ndd ndg ndn ndo ndr nds ndt nga ngb ngd ngg ngn ngo ngs ngt nna nnb nng nnn nno nns nnt no- noa nob nod nog non noo nor nos not nra nrb nrd nrg nrn nro nrr nrs nrt nsa nsb nsd nsg nsn nso nsr nss nst nta ntb ntd ntg ntn nto ntr nts ntt oaa oab oad oag oan oao oar oas oat ob- oba obb obd obg obn obo obr obs obt oda odb odd odg odn odo odr ods odt oga ogd ogg ogn ogo ogs ogt on- ona onb ond ong onn ono onr ons ont oo- ooa oob ood oog oon ooo oor oos oot or- ora orb ord org orn oro orr ors ort os- osa osb osd osg osn oso osr oss ost ot- ota otb otd otg otn oto otr ots ott ra- raa rab rad rag ran rao rar ras rat rba rbb rbd rbg rbn rbo rbr rbs rbt rda rdb rdd rdg rdn rdo rdr rds rdt rga rgb rgd rgg rgn rgo rgr rgs rgt rna rnb rnd rng rnn rno rnr rns rnt roa rob rod rog ron roo ror ros rot rra rrb rrd rrg rrn rrr rrs rrt rsa rsb rsd rsg rsn rso rsr rss rst rta rtb rtd rtg rtn rto rtr rts rtt saa sab sad sag san sao sar sas sat sba sbb sbd sbg sbn sbo sbr sbs sbt sda sdb sdd sdg sdn sdo sdr sds sdt sga sgb sgd sgg sgn sgo sgr sgs sgt sna snb snd sng snn sno snr sns snt soa sob sod sog son soo sor sos sot sr- sra srb srd srg srn sro srr srs srt ss- ssa ssb ssd ssg ssn sso ssr sss sst sta stb std stg stn sto str sts stt taa tab tad tag tan tao tar tas tat tba tbb tbd tbg tbn tbo tbr tbs tbt tda tdb tdd tdg tdn tdo tdr tds tdt tga tgb tgg tgn tgo tgr tgs tgt tna tnb tnd tng tnn tno tnr tns tnt to- toa tob tod tog ton too tor tos tot tra trb trd trg trn tro trr trs trt tsa tsb tsd tsg tsn tso tsr tss tst tta ttb ttd ttg ttn tto ttr tts ttt