-al a-a a-b a-i aaa aab aad aai aal aan aap ab- aba abb abd abi abl abn abp ad- ada adb add adi adl adn adp ai- aia aib aid aii ail ain aip al- ala alb ald ali all aln alp an- ana anb and ani anl ann anp ap- apa apb apd api apl apn app b-p baa bab bad bai bal ban bap bba bbb bbd bbi bbl bbn bbp bda bdb bdd bdi bdl bdp bi- bia bib bid bii bil bin bip bla blb bld bli bll bln blp bna bnb bnd bni bnl bnn bnp bpa bpb bpd bpi bpl bpn bpp daa dab dad dai dal dan dap dba dbb dbd dbi dbl dbn dbp dda ddb ddd ddi ddl ddn ddp di- dia dib did dii dil din dip dl- dla dlb dld dli dll dlp dna dnb dnd dni dnl dnn dnp dpa dpb dpd dpi dpl dpn dpp i-d ia- iaa iab iad iai ial ian iap iba ibb ibd ibi ibl ibn ibp ida idb idd idi idl idn idp iia iib iid iii iil iin iip il- ila ilb ild ili ill iln ilp in- ina inb ind ini inl inn inp ipa ipb ipd ipi ipl ipn ipp l-p la- laa lab lad lai lal lan lap lba lbb lbd lbi lbl lbp lda ldb ldd ldi ldl ldn ldp lia lib lid lii lil lin lip lla llb lld lli lll lln llp lna lnb lnd lni lnl lnn lnp lpa lpb lpd lpi lpl lpn lpp n-i naa nab nad nai nal nan nap nba nbb nbd nbi nbl nbn nbp nda ndb ndd ndi ndl ndn ndp nia nib nid nii nil nin nip nla nlb nld nli nll nln nlp nna nnb nni nnl nnn nnp npa npb npd npi npl npn npp p-p paa pab pad pai pal pan pap pba pbb pbd pbi pbl pbn pbp pda pdb pdd pdi pdl pdn pdp pia pib pid pii pil pin pip pla plb pld pli pll pln plp pn- pna pnb pnd pni pnl pnn pnp ppa ppb ppd ppi ppl ppn ppp