a-a a-b aaa aab aag aaj aan aao aas ab- aba abb abg abj abn abo abs ag- aga agb agg agj agn ago ags aja ajb ajj ajn ajo ajs an- ana anb ang anj ann ano ans aoa aob aog aoj aon aoo aos as- asa asb asg asj asn aso ass baa bab bag baj ban bao bas bba bbb bbg bbn bbo bbs bga bgb bgg bgn bgo bgs bja bjg bjj bjn bjs bna bnb bng bnj bnn bno bns boa bob bog boj bon boo bos bsa bsb bsg bsj bsn bso bss gaa gab gag gaj gan gao gas gba gbg gbj gbn gbo gbs gga ggb ggg ggj ggn ggo ggs gja gjg gna gnb gnn gno gns goa gob gog gon goo gos gsa gsb gsg gsj gsn gso gss jaa jab jag jaj jan jao jas jba jbg jbj jbo jbs jga jgb jgn jgo jgs jja jjb jjg jjj jjs jna jng jnj jnn jno jns joa job jog joj jon joo jos jsa jsb jsg jsj jsn jso jss naa nab nag naj nan nao nas nba nbb nbg nbn nbo nbs nga ngb ngg ngj ngn ngo ngs nja njn njs nna nnb nng nnn nno nns no- noa nob nog noj non noo nos nsa nsb nsg nsn nso nss oaa oab oag oaj oan oao oas ob- oba obb obg obj obn obo obs oga ogg ogn ogo ogs oja ojb ojo ojs on- ona onb ong onj onn ono ons oo- ooa oob oog oon ooo oos os- osa osb osg osj osn oso oss saa sab sag saj san sao sas sba sbb sbg sbj sbn sbo sbs sga sgb sgg sgn sgo sgs sja sjb sjj sjs sna snb sng snj snn sno sns soa sob sog soj son soo sos ss- ssa ssb ssg ssj ssn sso sss