-al a-a a-b aaa aab aae aak aal aan aap aas ab- aba abb abe abk abl abn abp abs aea aeb aee aek ael aen aep aes aka akb ake akk akl akn akp aks al- ala alb ale alk all aln alp als an- ana anb ane ank anl ann anp ans ap- apa apb ape apk apl apn app aps as- asa asb ase ask asl asn asp ass b-p baa bab bae bak bal ban bap bas bba bbb bbe bbk bbl bbn bbp bbs be- bea beb bee bek bel ben bep bes bka bkb bke bkk bkl bkn bkp bks bla blb ble blk bll bln blp bls bna bnb bne bnk bnl bnn bnp bns bpa bpb bpe bpl bpn bpp bps bsa bsb bse bsk bsl bsn bsp bss eaa eab eae eak eal ean eap eas eba ebb ebe ebk ebl ebn ebp ebs eea eeb eee eek eel een eep ees eka ekb eke ekl ekp eks ela elb ele elk ell eln elp els en- ena enb ene enk enl enn enp ens ep- epa epb epe epl epn epp eps es- esa esb ese esk esl esn esp ess ka- kaa kab kae kak kal kan kap kas kba kbb kbe kbk kbl kbn kbp kbs ke- kea keb kee kek kel ken kep kes kkb kke kkk kkl kkn kkp kks kl- kla klb kls kn- kna kne knk knl knn knp kpa kpe kpk kpl kpn kpp kps ksa ksb kse ksk ksl ksn ksp kss l-p la- laa lab lae lak lal lan lap las lba lbb lbe lbk lbl lbp lbs lea leb lee lek lel len lep les lka lkb lkl lkp lks lla llb lle llk lll lln llp lls lna lnb lne lnk lnl lnn lnp lns lpa lpb lpe lpk lpl lpn lpp lps lsa lsb lse lsk lsl lsn lsp lss naa nab nae nak nal nan nap nas nba nbb nbe nbk nbl nbn nbp nbs ne- nea neb nee nek nel nen nep nes nka nke nkk nkn nkp nks nla nlb nle nlk nll nln nlp nls nna nnb nne nnk nnl nnn nnp nns npa npb npe npl npn npp nps nsa nsb nse nsk nsl nsn nsp nss p-p paa pab pae pak pal pan pap pas pba pbb pbe pbk pbl pbn pbp pbs pea peb pee pek pel pen pep pes pka pkb pke pkl pkn pkp pks pla plb ple plk pll pln plp pls pn- pna pnb pne pnk pnl pnn pnp pns ppa ppb ppe ppk ppl ppn ppp pps ps- psa psb pse psk psl psn psp pss saa sab sae sak sal san sap sas sba sbb sbe sbk sbl sbn sbp sbs se- sea seb see sek sel sen sep ses sk- ska skb ske skk skl skp sks sla slb sle slk sll sln slp sls sna snb sne snk snl snn snp sns spa spb spe spk spl spn spp sps ss- ssa ssb sse ssk ssl ssn ssp sss