-al -er a-a a-b aaa aab aae aak aal aam aan aar ab- aba abb abe abk abl abm abn abr aea aeb aee aek ael aem aen aer aka akb ake akk akl akm akn akr al- ala alb ale alk all alm aln alr ama amb ame amk aml amm amn amr an- ana anb ane ank anl anm ann anr ar- ara arb are ark arl arm arn arr baa bab bae bak bal bam ban bar bba bbb bbe bbk bbl bbm bbn bbr be- bea beb bee bek bel bem ben ber bka bkb bke bkk bkl bkm bkn bkr bla blb ble blk bll blm bln blr bma bmb bme bmk bml bmm bmn bmr bna bnb bne bnk bnl bnn bnr bra brb bre brk brl brm brn brr eaa eab eae eak eal eam ean ear eba ebb ebe ebk ebl ebm ebn ebr eea eeb eee eek eel eem een eer eka ekb eke ekl ekr ela elb ele elk ell elm eln elr em- ema emb eme emk eml emm emn emr en- ena enb ene enk enl enm enn enr era erb ere erk erl erm ern err ka- kaa kab kae kak kal kam kan kar kba kbb kbe kbk kbl kbm kbn kbr ke- kea keb kee kek kel kem ken ker kkb kke kkk kkl kkm kkn kkr kl- kla klb klm klr kma kmb kme kmk kml kmm kn- kna kne knk knl knm knn knr kra krk krl krn krr la- laa lab lae lak lal lam lan lar lba lbb lbe lbk lbl lbm lbr lea leb lee lek lel lem len ler lka lkb lkl lkr lla llb lle llk lll llm lln llr lma lmb lme lmk lml lmm lmn lmr lna lnb lne lnk lnl lnm lnn lnr lra lrb lrk lrm lrn lrr m-r maa mab mae mak mal mam man mar mba mbb mbe mbk mbl mbm mbr mea meb mee mek mel mem men mer mka mkb mke mkk mkl mkm mkn mkr mla mlb mle mlk mll mlm mln mlr mma mmb mme mmk mml mmm mmn mmr mna mnb mne mnk mnl mnm mnn mnr mra mrb mre mrk mrl mrm mrn mrr naa nab nae nak nal nam nan nar nba nbb nbe nbk nbl nbm nbn nbr ne- nea neb nee nek nel nem nen ner nka nke nkk nkm nkn nkr nla nlb nle nlk nll nlm nln nlr nma nmb nme nmk nml nmm nmn nmr nna nnb nne nnk nnl nnm nnn nra nrb nre nrk nrl nrm nrn nrr ra- raa rab rae rak ral ram ran rar rba rbb rbe rbk rbl rbm rbn rbr re- rea reb ree rek rel rem ren rer rkb rke rkk rkm rla rle rll rlm rln rlr rma rmb rme rml rmm rmn rmr rna rnb rnm rnn rnr rra rrb rrk rrl rrm rrn rrr