a-a a-b aaa aab aad aag aam aan aao aas ab- aba abb abd abg abm abn abo abs ad- ada adb add adg adm adn ado ads ag- aga agb agd agg agm agn ago ags ama amb amd amg amm amn amo ams an- ana anb and ang anm ann ano ans aoa aob aod aog aom aon aoo aos as- asa asb asd asg asm asn aso ass baa bab bad bag bam ban bao bas bba bbb bbd bbg bbm bbn bbo bbs bda bdb bdd bdg bdm bdo bds bga bgb bgd bgg bgm bgn bgo bgs bma bmb bmd bmg bmm bmn bmo bms bna bnb bnd bng bnn bno bns boa bob bod bog bom bon boo bos bsa bsb bsd bsg bsm bsn bso bss daa dab dad dag dam dan dao das dba dbb dbd dbg dbm dbn dbo dbs dda ddb ddd ddg ddm ddn ddo dds dga dgd dgg dgm dgn dgs dma dmb dmd dmg dmm dmn dmo dms dna dnb dnd dng dnm dnn dno dns doa dob dod dog dom don doo dos dsa dsb dsd dsg dsm dsn dso dss g-d gaa gab gad gag gam gan gao gas gba gbd gbg gbm gbn gbo gbs gda gdb gdd gdm gdn gdo gds gga ggb ggd ggg ggm ggn ggo ggs gma gmb gmd gmg gmm gmn gmo gms gna gnb gnd gnm gnn gno gns goa gob god gog gom gon goo gos gsa gsb gsd gsg gsm gsn gso gss m-o maa mab mad mag mam man mao mas mba mbb mbd mbg mbm mbo mbs mda mdb mdd mdg mdm mdn mdo mds mga mgb mgd mgm mgn mgo mgs mma mmb mmd mmg mmm mmn mmo mms mna mnb mng mnm mnn mno mns moa mob mod mog mom mon moo mos msa msb msd msg msm msn mso mss naa nab nad nag nam nan nao nas nba nbb nbd nbg nbm nbn nbo nbs nda ndb ndd ndg ndm ndn ndo nds nga ngb ngd ngg ngm ngn ngo ngs nma nmb nmd nmg nmm nmn nmo nms nna nnb nng nnm nnn nno nns no- noa nob nod nog nom non noo nos nsa nsb nsd nsg nsm nsn nso nss oaa oab oad oag oam oan oao oas ob- oba obb obd obg obm obn obo obs oda odb odd odg odm odn odo ods oga ogd ogg ogn ogo ogs om- oma omb omd omg omm omn omo oms on- ona onb ond ong onn ono ons oo- ooa oob ood oog oom oon ooo oos os- osa osb osd osg osm osn oso oss saa sab sad sag sam san sao sas sba sbb sbd sbg sbm sbn sbo sbs sda sdb sdd sdg sdm sdn sdo sds sga sgb sgd sgg sgm sgn sgo sgs sma smb smd smg smm smn smo sms sna snb snd sng snm snn sno sns soa sob sod sog som son soo sos ss- ssa ssb ssd ssg ssm ssn sso sss