-al a-a a-b a-t aaa aab aad aal aan aap aat ab- aba abb abd abl abn abp abt ad- ada adb add adl adn adp adt al- ala alb ald all aln alp alt an- ana anb and anl ann anp ant ap- apa apb apd apl apn app apt at- ata atb atd atl atn atp att b-p baa bab bad bal ban bap bat bba bbb bbd bbl bbn bbp bbt bda bdb bdd bdl bdp bdt bla blb bld bll bln blp blt bna bnb bnd bnl bnn bnp bnt bpa bpb bpd bpl bpn bpp bpt bta btb btd btl btn btp btt daa dab dad dal dan dap dat dba dbb dbd dbl dbn dbp dbt dda ddb ddd ddl ddn ddp ddt dl- dla dlb dld dll dlp dlt dna dnb dnd dnl dnn dnp dnt dpa dpb dpd dpl dpn dpp dpt dta dtb dtd dtl dtn dtp dtt l-p la- laa lab lad lal lan lap lat lba lbb lbd lbl lbp lbt lda ldb ldd ldl ldn ldp ldt lla llb lld lll lln llp llt lna lnb lnd lnl lnn lnp lnt lpa lpb lpd lpl lpn lpp lpt lta ltb ltd ltl ltp ltt naa nab nad nal nan nap nat nba nbb nbd nbl nbn nbp nbt nda ndb ndd ndl ndn ndp ndt nla nlb nld nll nln nlp nlt nna nnb nnl nnn nnp nnt npa npb npd npl npn npp npt nta ntb ntd ntn ntp ntt p-p paa pab pad pal pan pap pat pba pbb pbd pbl pbn pbp pbt pda pdb pdd pdl pdn pdp pdt pla plb pld pll pln plp plt pn- pna pnb pnd pnl pnn pnp pnt ppa ppb ppd ppl ppn ppp ppt pt- pta ptb ptd ptl ptn ptp ptt taa tab tad tal tan tap tat tba tbb tbd tbl tbn tbp tbt tda tdb tdd tdl tdn tdp tdt tla tld tll tln tlp tlt tna tnb tnd tnl tnn tnp tnt tpa tpb tpd tpl tpn tpp tpt tta ttb ttd ttl ttn ttp ttt