a-a a-b a-i a-t aaa aab aae aai aan aap aat ab- aba abb abe abi abn abp abt aea aeb aee aei aen aep aet ai- aia aib aie aii ain aip ait an- ana anb ane ani ann anp ant ap- apa apb ape api apn app apt at- ata atb ate ati atn atp att b-p baa bab bae bai ban bap bat bba bbb bbe bbi bbn bbp bbt be- bea beb bee bei ben bep bet bi- bia bib bie bii bin bip bit bna bnb bne bni bnn bnp bnt bpa bpb bpe bpi bpn bpp bpt bta btb bte bti btn btp btt eaa eab eae eai ean eap eat eba ebb ebe ebi ebn ebp ebt eea eeb eee een eep eet eia eib eie eii ein eip eit en- ena enb ene eni enn enp ent ep- epa epb epe epi epn epp ept eta etb ete eti etn etp ett ia- iaa iab iae iai ian iap iat iba ibb ibe ibi ibn ibp ibt ie- iea iee iei ien iep iet iia iib iie iii iin iip iit in- ina inb ine ini inn inp int ipa ipb ipe ipi ipn ipp ipt ita itb ite iti itn itp itt n-i naa nab nae nai nan nap nat nba nbb nbe nbi nbn nbp nbt ne- nea neb nee nei nen nep net nia nib nie nii nin nip nit nna nnb nne nni nnn nnp nnt npa npb npe npi npn npp npt nta ntb nte nti ntn ntp ntt p-p paa pab pae pai pan pap pat pba pbb pbe pbi pbn pbp pbt pea peb pee pei pen pep pet pia pib pie pii pin pip pit pn- pna pnb pne pni pnn pnp pnt ppa ppb ppe ppi ppn ppp ppt pt- pta ptb pte pti ptn ptp ptt taa tab tae tai tan tap tat tba tbb tbe tbi tbn tbp tbt te- tea teb tee tei ten tep tet tia tib tie tii tin tip tit tna tnb tne tni tnn tnp tnt tpa tpb tpe tpi tpn tpp tpt tta ttb tte tti ttn ttp ttt