a-a a-b aaa aab aad aak aam aan aar ab- aba abb abd abk abm abn abr ad- ada adb add adk adm adn adr aka akb akd akk akm akn akr ama amb amd amk amm amn amr an- ana anb and ank anm ann anr ar- ara arb ard ark arm arn arr baa bab bad bak bam ban bar bba bbb bbd bbk bbm bbn bbr bda bdb bdd bdk bdm bdr bka bkb bkk bkm bkn bkr bma bmb bmd bmk bmm bmn bmr bna bnb bnd bnk bnn bnr bra brb brd brk brm brn brr daa dab dad dak dam dan dar dba dbb dbd dbk dbm dbn dbr dda ddb ddd ddk ddm ddn ddr dka dkb dkk dkm dkr dma dmb dmd dmk dmm dmn dmr dna dnb dnd dnk dnm dnn dnr dra drb drd drk drm drn drr ka- kaa kab kad kak kam kan kar kba kbb kbd kbk kbm kbn kbr kda kdb kdk kdm kdr kkb kkk kkm kkn kkr kma kmb kmd kmk kmm kn- kna knd knk knm knn knr kra krd krk krn krr m-r maa mab mad mak mam man mar mba mbb mbd mbk mbm mbr mda mdb mdd mdk mdm mdn mdr mka mkb mkd mkk mkm mkn mkr mma mmb mmd mmk mmm mmn mmr mna mnb mnk mnm mnn mnr mra mrb mrd mrk mrm mrn mrr naa nab nad nak nam nan nar nba nbb nbd nbk nbm nbn nbr nda ndb ndd ndk ndm ndn ndr nka nkk nkm nkn nkr nma nmb nmd nmk nmm nmn nmr nna nnb nnk nnm nnn nra nrb nrd nrk nrm nrn nrr ra- raa rab rad rak ram ran rar rba rbb rbd rbk rbm rbn rbr rda rdb rdd rdm rdn rdr rkb rkk rkm rma rmb rmd rmm rmn rmr rna rnb rnd rnm rnn rnr rra rrb rrd rrk rrm rrn rrr