a-a a-b aaa aab aad aaj aan aao aar aas ab- aba abb abd abj abn abo abr abs ad- ada adb add adj adn ado adr ads aja ajb ajd ajj ajn ajo ajr ajs an- ana anb and anj ann ano anr ans aoa aob aod aoj aon aoo aor aos ar- ara arb ard arj arn aro arr ars as- asa asb asd asj asn aso asr ass baa bab bad baj ban bao bar bas bba bbb bbd bbn bbo bbr bbs bda bdb bdd bdj bdo bdr bds bja bjd bjj bjn bjr bjs bna bnb bnd bnj bnn bno bnr bns boa bob bod boj bon boo bor bos bra brb brd brj brn bro brr brs bsa bsb bsd bsj bsn bso bsr bss daa dab dad daj dan dao dar das dba dbb dbd dbn dbo dbr dbs dda ddb ddd ddn ddo ddr dds dj- dja djb djd djo djs dna dnb dnd dnj dnn dno dnr dns doa dob dod doj don doo dor dos dra drb drd drj drn dro drr drs dsa dsb dsd dsj dsn dso dsr dss j-d jaa jab jad jaj jan jao jar jas jba jbj jbo jbr jbs jda jdb jdn jdo jdr jds jja jjb jjj jjr jjs jna jnd jnj jnn jno jnr jns joa job jod joj jon joo jor jos jra jrb jrn jro jrr jrs jsa jsb jsd jsj jsn jso jsr jss naa nab nad naj nan nao nar nas nba nbb nbd nbn nbo nbr nbs nda ndb ndd ndn ndo ndr nds nja njn njs nna nnb nnn nno nns no- noa nob nod noj non noo nor nos nra nrb nrd nrj nrn nro nrr nrs nsa nsb nsd nsn nso nsr nss oaa oab oad oaj oan oao oar oas ob- oba obb obd obj obn obo obr obs oda odb odd odn odo odr ods oja ojb ojd ojo ojs on- ona onb ond onj onn ono onr ons oo- ooa oob ood oon ooo oor oos or- ora orb ord orn oro orr ors os- osa osb osd osj osn oso osr oss ra- raa rab rad raj ran rao rar ras rba rbb rbd rbn rbo rbr rbs rda rdb rdd rdj rdn rdo rdr rds rja rjr rna rnb rnd rnn rno rnr rns roa rob rod roj ron roo ror ros rra rrb rrd rrn rrr rrs rsa rsb rsd rsj rsn rso rsr rss saa sab sad saj san sao sar sas sba sbb sbd sbj sbn sbo sbr sbs sda sdb sdd sdj sdn sdo sdr sds sja sjb sjd sjj sjr sjs sna snb snd snj snn sno snr sns soa sob sod soj son soo sor sos sr- sra srb srd srj srn sro srr srs ss- ssa ssb ssd ssj ssn sso ssr sss