-al a-a a-b aaa aab aae aak aal aam aan aap ab- aba abb abe abk abl abm abn abp aea aeb aee aek ael aem aen aep aka akb ake akk akl akm akn akp al- ala alb ale alk all alm aln alp ama amb ame amk aml amm amn amp an- ana anb ane ank anl anm ann anp ap- apa apb ape apk apl apm apn app b-p baa bab bae bak bal bam ban bap bba bbb bbe bbk bbl bbm bbn bbp be- bea beb bee bek bel bem ben bep bka bkb bke bkk bkl bkm bkn bkp bla blb ble blk bll blm bln blp bma bmb bme bmk bml bmm bmn bmp bna bnb bne bnk bnl bnn bnp bpa bpb bpe bpl bpm bpn bpp eaa eab eae eak eal eam ean eap eba ebb ebe ebk ebl ebm ebn ebp eea eeb eee eek eel eem een eep eka ekb eke ekl ekp ela elb ele elk ell elm eln elp em- ema emb eme emk eml emm emn emp en- ena enb ene enk enl enm enn enp ep- epa epb epe epl epm epn epp ka- kaa kab kae kak kal kam kan kap kba kbb kbe kbk kbl kbm kbn kbp ke- kea keb kee kek kel kem ken kep kkb kke kkk kkl kkm kkn kkp kl- kla klb klm kma kmb kme kmk kml kmm kmp kn- kna kne knk knl knm knn knp kpa kpe kpk kpl kpm kpn kpp l-p la- laa lab lae lak lal lam lan lap lba lbb lbe lbk lbl lbm lbp lea leb lee lek lel lem len lep lka lkb lkl lkp lla llb lle llk lll llm lln llp lma lmb lme lmk lml lmm lmn lmp lna lnb lne lnk lnl lnm lnn lnp lpa lpb lpe lpk lpl lpm lpn lpp maa mab mae mak mal mam man map mba mbb mbe mbk mbl mbm mbp mea meb mee mek mel mem men mep mka mkb mke mkk mkl mkm mkn mkp mla mlb mle mlk mll mlm mln mlp mma mmb mme mmk mml mmm mmn mmp mna mnb mne mnk mnl mnm mnn mnp mpa mpb mpe mpk mpl mpm mpn mpp naa nab nae nak nal nam nan nap nba nbb nbe nbk nbl nbm nbn nbp ne- nea neb nee nek nel nem nen nep nka nke nkk nkm nkn nkp nla nlb nle nlk nll nlm nln nlp nma nmb nme nmk nml nmm nmn nmp nna nnb nne nnk nnl nnm nnn nnp npa npb npe npl npm npn npp p-p paa pab pae pak pal pam pan pap pba pbb pbe pbk pbl pbm pbn pbp pea peb pee pek pel pem pen pep pka pkb pke pkl pkm pkn pkp pla plb ple plk pll plm pln plp pma pmb pme pmk pml pmm pmn pmp pn- pna pnb pne pnk pnl pnm pnn pnp ppa ppb ppe ppk ppl ppm ppn ppp