-al a-a a-b a-t aaa aab aae aak aal aan aap aat ab- aba abb abe abk abl abn abp abt aea aeb aee aek ael aen aep aet aka akb ake akk akl akn akp al- ala alb ale alk all aln alp alt an- ana anb ane ank anl ann anp ant ap- apa apb ape apk apl apn app apt at- ata atb ate atl atn atp att b-p baa bab bae bak bal ban bap bat bba bbb bbe bbk bbl bbn bbp bbt be- bea beb bee bek bel ben bep bet bka bkb bke bkk bkl bkn bkp bkt bla blb ble blk bll bln blp blt bna bnb bne bnk bnl bnn bnp bnt bpa bpb bpe bpl bpn bpp bpt bta btb bte btk btl btn btp btt eaa eab eae eak eal ean eap eat eba ebb ebe ebk ebl ebn ebp ebt eea eeb eee eek eel een eep eet eka ekb eke ekl ekp ekt ela elb ele elk ell eln elp elt en- ena enb ene enk enl enn enp ent ep- epa epb epe epl epn epp ept eta etb ete etk etl etn etp ett k-t ka- kaa kab kae kak kal kan kap kat kba kbb kbe kbk kbl kbn kbp ke- kea keb kee kek kel ken kep ket kkb kke kkk kkl kkn kkp kkt kl- kla klb klt kn- kna kne knk knl knn knp knt kpa kpe kpk kpl kpn kpp kpt kta ktb kte ktk ktl ktn ktp ktt l-p la- laa lab lae lak lal lan lap lat lba lbb lbe lbk lbl lbp lbt lea leb lee lek lel len lep let lka lkb lkl lkp lkt lla llb lle llk lll lln llp llt lna lnb lne lnk lnl lnn lnp lnt lpa lpb lpe lpk lpl lpn lpp lpt lta ltb lte ltk ltl ltp ltt naa nab nae nak nal nan nap nat nba nbb nbe nbk nbl nbn nbp nbt ne- nea neb nee nek nel nen nep net nka nke nkk nkn nkp nkt nla nlb nle nlk nll nln nlp nlt nna nnb nne nnk nnl nnn nnp nnt npa npb npe npl npn npp npt nta ntb nte ntk ntn ntp ntt p-p paa pab pae pak pal pan pap pat pba pbb pbe pbk pbl pbn pbp pbt pea peb pee pek pel pen pep pet pka pkb pke pkl pkn pkp pkt pla plb ple plk pll pln plp plt pn- pna pnb pne pnk pnl pnn pnp pnt ppa ppb ppe ppk ppl ppn ppp ppt pt- pta ptb pte ptk ptl ptn ptp ptt taa tab tae tak tal tan tap tat tba tbb tbe tbk tbl tbn tbp tbt te- tea teb tee tek tel ten tep tet tka tkb tke tkk tkl tkp tkt tla tle tlk tll tln tlp tlt tna tnb tne tnk tnl tnn tnp tnt tpa tpb tpe tpk tpl tpn tpp tpt tta ttb tte ttk ttl ttn ttp ttt