a-a a-b aaa aab aad aag aam aao aar aas ab- aba abb abd abg abm abo abr abs ad- ada adb add adg adm ado adr ads ag- aga agb agd agg agm ago agr ags ama amb amd amg amm amo amr ams aoa aob aod aog aom aoo aor aos ar- ara arb ard arg arm aro arr ars as- asa asb asd asg asm aso asr ass baa bab bad bag bam bao bar bas bba bbb bbd bbg bbm bbo bbr bbs bda bdb bdd bdg bdm bdo bdr bds bga bgb bgd bgg bgm bgo bgr bgs bma bmb bmd bmg bmm bmo bmr bms boa bob bod bog bom boo bor bos bra brb brd brg brm bro brr brs bsa bsb bsd bsg bsm bso bsr bss daa dab dad dag dam dao dar das dba dbb dbd dbg dbm dbo dbr dbs dda ddb ddd ddg ddm ddo ddr dds dga dgd dgg dgm dgr dgs dma dmb dmd dmg dmm dmo dmr dms doa dob dod dog dom doo dor dos dra drb drd drg drm dro drr drs dsa dsb dsd dsg dsm dso dsr dss g-d gaa gab gad gag gam gao gar gas gba gbd gbg gbm gbo gbr gbs gda gdb gdd gdm gdo gdr gds gga ggb ggd ggg ggm ggo ggr ggs gma gmb gmd gmg gmm gmo gmr gms goa gob god gog gom goo gor gos gra grb grd grg grm gro grr grs gsa gsb gsd gsg gsm gso gsr gss m-o m-r maa mab mad mag mam mao mar mas mba mbb mbd mbg mbm mbo mbr mbs mda mdb mdd mdg mdm mdo mdr mds mga mgb mgd mgm mgo mgr mgs mma mmb mmd mmg mmm mmo mmr mms moa mob mod mog mom moo mor mos mra mrb mrd mrg mrm mro mrr mrs msa msb msd msg msm mso msr mss oaa oab oad oag oam oao oar oas ob- oba obb obd obg obm obo obr obs oda odb odd odg odm odo odr ods oga ogd ogg ogo ogs om- oma omb omd omg omm omo omr oms oo- ooa oob ood oog oom ooo oor oos or- ora orb ord org orm oro orr ors os- osa osb osd osg osm oso osr oss ra- raa rab rad rag ram rao rar ras rba rbb rbd rbg rbm rbo rbr rbs rda rdb rdd rdg rdm rdo rdr rds rga rgb rgd rgg rgo rgr rgs rma rmb rmd rmg rmm rmo rmr rms roa rob rod rog rom roo ror ros rra rrb rrd rrg rrm rrr rrs rsa rsb rsd rsg rsm rso rsr rss saa sab sad sag sam sao sar sas sba sbb sbd sbg sbm sbo sbr sbs sda sdb sdd sdg sdm sdo sdr sds sga sgb sgd sgg sgm sgo sgr sgs sma smb smd smg smm smo smr sms soa sob sod sog som soo sor sos sr- sra srb srd srg srm sro srr srs ss- ssa ssb ssd ssg ssm sso ssr sss