a-a a-b aaa aab aaj aak aan aar aas ab- aba abb abj abk abn abr abs aja ajb ajj ajk ajn ajr ajs aka akb akj akk akn akr aks an- ana anb anj ank ann anr ans ar- ara arb arj ark arn arr ars as- asa asb asj ask asn asr ass baa bab baj bak ban bar bas bba bbb bbk bbn bbr bbs bja bjj bjk bjn bjr bjs bka bkb bkk bkn bkr bks bna bnb bnj bnk bnn bnr bns bra brb brj brk brn brr brs bsa bsb bsj bsk bsn bsr bss jaa jab jaj jak jan jar jas jba jbj jbk jbr jbs jja jjb jjj jjk jjr jjs jka jkb jkk jkn jkr jks jna jnj jnn jnr jns jra jrb jrk jrn jrr jrs jsa jsb jsj jsk jsn jsr jss ka- kaa kab kaj kak kan kar kas kba kbb kbk kbn kbr kbs kjb kjr kjs kkb kkk kkn kkr kks kn- kna knk knn knr kra krk krn krr krs ksa ksb ksk ksn ksr kss naa nab naj nak nan nar nas nba nbb nbk nbn nbr nbs nja njk njn njs nka nkj nkk nkn nkr nks nna nnb nnk nnn nns nra nrb nrj nrk nrn nrr nrs nsa nsb nsk nsn nsr nss ra- raa rab raj rak ran rar ras rba rbb rbk rbn rbr rbs rja rjk rjr rkb rkk rks rna rnb rnn rnr rns rra rrb rrk rrn rrr rrs rsa rsb rsj rsk rsn rsr rss saa sab saj sak san sar sas sba sbb sbj sbk sbn sbr sbs sja sjb sjj sjk sjr sjs sk- ska skb skj skk skr sks sna snb snj snk snn snr sns sr- sra srb srj srk srn srr srs ss- ssa ssb ssj ssk ssn ssr sss