a-a a-b aaa aab aad aaj aak aan aao aar ab- aba abb abd abj abk abn abo abr ad- ada adb add adj adk adn ado adr aja ajb ajd ajj ajk ajn ajo ajr aka akb akd akj akk akn ako akr an- ana anb and anj ank ann ano anr aoa aob aod aoj aok aon aoo aor ar- ara arb ard arj ark arn aro arr baa bab bad baj bak ban bao bar bba bbb bbd bbk bbn bbo bbr bda bdb bdd bdj bdk bdo bdr bja bjd bjj bjk bjn bjr bka bkb bkk bkn bko bkr bna bnb bnd bnj bnk bnn bno bnr boa bob bod boj bok bon boo bor bra brb brd brj brk brn bro brr daa dab dad daj dak dan dao dar dba dbb dbd dbk dbn dbo dbr dda ddb ddd ddk ddn ddo ddr dj- dja djb djd djk djo dka dkb dkk dko dkr dna dnb dnd dnj dnk dnn dno dnr doa dob dod doj dok don doo dor dra drb drd drj drk drn dro drr j-d jaa jab jad jaj jak jan jao jar jba jbj jbk jbo jbr jda jdb jdn jdo jdr jja jjb jjj jjk jjr jka jkb jkk jkn jko jkr jna jnd jnj jnn jno jnr joa job jod joj jok jon joo jor jra jrb jrk jrn jro jrr ka- kaa kab kad kaj kak kan kao kar kba kbb kbd kbk kbn kbo kbr kda kdb kdk kdo kdr kjb kjr kkb kkk kkn kkr kn- kna knd knk knn kno knr koa kob kod kok kon koo kor kra krd krk krn kro krr naa nab nad naj nak nan nao nar nba nbb nbd nbk nbn nbo nbr nda ndb ndd ndk ndn ndo ndr nja njk njn nka nkj nkk nkn nko nkr nna nnb nnk nnn nno no- noa nob nod noj nok non noo nor nra nrb nrd nrj nrk nrn nro nrr oaa oab oad oaj oak oan oao oar ob- oba obb obd obj obk obn obo obr oda odb odd odn odo odr oja ojb ojd ojo oka okb okd okj okk oko okr on- ona onb ond onj onk onn ono onr oo- ooa oob ood ook oon ooo oor or- ora orb ord ork orn oro orr ra- raa rab rad raj rak ran rao rar rba rbb rbd rbk rbn rbo rbr rda rdb rdd rdj rdn rdo rdr rja rjk rjr rkb rkk rko rna rnb rnd rnn rno rnr roa rob rod roj rok ron roo ror rra rrb rrd rrk rrn rrr