a-a a-b a-i a-t aaa aab aae aai aap aat ab- aba abb abe abi abp abt aea aeb aee aei aep aet ai- aia aib aie aii aip ait ap- apa apb ape api app apt at- ata atb ate ati atp att b-p baa bab bae bai bap bat bba bbb bbe bbi bbp bbt be- bea beb bee bei bep bet bi- bia bib bie bii bip bit bpa bpb bpe bpi bpp bpt bta btb bte bti btp btt eaa eab eae eai eap eat eba ebb ebe ebi ebp ebt eea eeb eee eep eet eia eib eie eii eip eit ep- epa epb epe epi epp ept eta etb ete eti etp ett ia- iaa iab iae iai iap iat iba ibb ibe ibi ibp ibt ie- iea iee iei iep iet iia iib iie iii iip iit ipa ipb ipe ipi ipp ipt ita itb ite iti itp itt p-p paa pab pae pai pap pat pba pbb pbe pbi pbp pbt pea peb pee pei pep pet pia pib pie pii pip pit ppa ppb ppe ppi ppp ppt pt- pta ptb pte pti ptp ptt taa tab tae tai tap tat tba tbb tbe tbi tbp tbt te- tea teb tee tei tep tet tia tib tie tii tip tit tpa tpb tpe tpi tpp tpt tta ttb tte tti ttp ttt