-al a-a a-b aaa aab aal aan aap aas ab- aba abb abl abn abp abs al- ala alb all aln alp als an- ana anb anl ann anp ans ap- apa apb apl apn app aps as- asa asb asl asn asp ass b-p baa bab bal ban bap bas bba bbb bbl bbn bbp bbs bla blb bll bln blp bls bna bnb bnl bnn bnp bns bpa bpb bpl bpn bpp bps bsa bsb bsl bsn bsp bss l-p la- laa lab lal lan lap las lba lbb lbl lbp lbs lla llb lll lln llp lls lna lnb lnl lnn lnp lns lpa lpb lpl lpn lpp lps lsa lsb lsl lsn lsp lss naa nab nal nan nap nas nba nbb nbl nbn nbp nbs nla nlb nll nln nlp nls nna nnb nnl nnn nnp nns npa npb npl npn npp nps nsa nsb nsl nsn nsp nss p-p paa pab pal pan pap pas pba pbb pbl pbn pbp pbs pla plb pll pln plp pls pn- pna pnb pnl pnn pnp pns ppa ppb ppl ppn ppp pps ps- psa psb psl psn psp pss saa sab sal san sap sas sba sbb sbl sbn sbp sbs sla slb sll sln slp sls sna snb snl snn snp sns spa spb spl spn spp sps ss- ssa ssb ssl ssn ssp sss