-al a-a a-b a-c aaa aab aac aae aal aam aan aap ab- aba abb abc abe abl abm abn abp ac- aca acb acc ace acl acm acn acp aea aeb aec aee ael aem aen aep al- ala alb alc ale all alm aln alp ama amb amc ame aml amm amn amp an- ana anb anc ane anl anm ann anp ap- apa apb apc ape apl apm apn app b-p baa bab bac bae bal bam ban bap bba bbb bbc bbe bbl bbm bbn bbp bca bcb bcc bce bcl bcm bcn bcp be- bea beb bec bee bel bem ben bep bla blb blc ble bll blm bln blp bma bmb bmc bme bml bmm bmn bmp bna bnb bnc bne bnl bnn bnp bpa bpb bpc bpe bpl bpm bpn bpp c-- caa cab cac cae cal cam can cap cba cbb cbc cbe cbl cbm cbn cbp cca ccb ccc cce ccl ccm ccn ccp ce- cea ceb cec cee cel cem cen cep cl- cla clb clc cle cll clm cln clp cma cmb cmc cme cml cmm cmn cmp cn- cna cnb cnc cne cnl cnm cnn cnp cpa cpb cpc cpe cpl cpm cpn cpp eaa eab eac eae eal eam ean eap eba ebb ebc ebe ebl ebm ebn ebp ec- eca ecb ecc ece ecl ecm ecn eea eeb eec eee eel eem een eep ela elb elc ele ell elm eln elp em- ema emb emc eme eml emm emn emp en- ena enb enc ene enl enm enn enp ep- epa epb epc epe epl epm epn epp l-p la- laa lab lac lae lal lam lan lap lba lbb lbc lbe lbl lbm lbp lca lcb lcc lce lcl lcm lcn lcp lea leb lec lee lel lem len lep lla llb llc lle lll llm lln llp lma lmb lmc lme lml lmm lmn lmp lna lnb lnc lne lnl lnm lnn lnp lpa lpb lpc lpe lpl lpm lpn lpp maa mab mac mae mal mam man map mba mbb mbc mbe mbl mbm mbp mc- mca mcb mcc mce mcl mcm mcn mcp mea meb mec mee mel mem men mep mla mlb mlc mle mll mlm mln mlp mma mmb mmc mme mml mmm mmn mmp mna mnb mnc mne mnl mnm mnn mnp mpa mpb mpc mpe mpl mpm mpn mpp naa nab nac nae nal nam nan nap nba nbb nbc nbe nbl nbm nbn nbp nca ncb ncc nce ncl ncm ncn ncp ne- nea neb nec nee nel nem nen nep nla nlb nlc nle nll nlm nln nlp nma nmb nmc nme nml nmm nmn nmp nna nnb nnc nne nnl nnm nnn nnp npa npb npc npe npl npm npn npp p-p paa pab pac pae pal pam pan pap pba pbb pbc pbe pbl pbm pbn pbp pca pcb pcc pce pcl pcm pcn pcp pea peb pec pee pel pem pen pep pla plb plc ple pll plm pln plp pma pmb pmc pme pml pmm pmn pmp pn- pna pnb pnc pne pnl pnm pnn pnp ppa ppb ppc ppe ppl ppm ppn ppp