-al a-a a-b a-c aaa aab aac aak aal aam aan ab- aba abb abc abk abl abm abn ac- aca acb acc ack acl acm acn aka akb akc akk akl akm akn al- ala alb alc alk all alm aln ama amb amc amk aml amm amn an- ana anb anc ank anl anm ann baa bab bac bak bal bam ban bba bbb bbc bbk bbl bbm bbn bca bcb bcc bck bcl bcm bcn bka bkb bkc bkk bkl bkm bkn bla blb blc blk bll blm bln bma bmb bmc bmk bml bmm bmn bna bnb bnc bnk bnl bnn c-- caa cab cac cak cal cam can cba cbb cbc cbk cbl cbm cbn cca ccb ccc cck ccl ccm ccn cka ckb ckc ckm cl- cla clb clc clk cll clm cln cma cmb cmc cmk cml cmm cmn cn- cna cnb cnc cnl cnm cnn ka- kaa kab kac kak kal kam kan kba kbb kbc kbk kbl kbm kbn kca kcb kcc kck kcl kcm kcn kkb kkc kkk kkl kkm kkn kl- kla klb klc klm kma kmb kmc kmk kml kmm kn- kna knc knk knl knm knn la- laa lab lac lak lal lam lan lba lbb lbc lbk lbl lbm lca lcb lcc lck lcl lcm lcn lka lkb lkl lla llb llc llk lll llm lln lma lmb lmc lmk lml lmm lmn lna lnb lnc lnk lnl lnm lnn maa mab mac mak mal mam man mba mbb mbc mbk mbl mbm mc- mca mcb mcc mck mcl mcm mcn mka mkb mkc mkk mkl mkm mkn mla mlb mlc mlk mll mlm mln mma mmb mmc mmk mml mmm mmn mna mnb mnc mnk mnl mnm mnn naa nab nac nak nal nam nan nba nbb nbc nbk nbl nbm nbn nca ncb ncc nck ncl ncm ncn nka nkc nkk nkm nkn nla nlb nlc nlk nll nlm nln nma nmb nmc nmk nml nmm nmn nna nnb nnc nnk nnl nnm nnn