a-a a-b a-i a-t aaa aab aad aai aap aat ab- aba abb abd abi abp abt ad- ada adb add adi adp adt ai- aia aib aid aii aip ait ap- apa apb apd api app apt at- ata atb atd ati atp att b-p baa bab bad bai bap bat bba bbb bbd bbi bbp bbt bda bdb bdd bdi bdp bdt bi- bia bib bid bii bip bit bpa bpb bpd bpi bpp bpt bta btb btd bti btp btt daa dab dad dai dap dat dba dbb dbd dbi dbp dbt dda ddb ddd ddi ddp ddt di- dia dib did dii dip dit dpa dpb dpd dpi dpp dpt dta dtb dtd dti dtp dtt i-d ia- iaa iab iad iai iap iat iba ibb ibd ibi ibp ibt ida idb idd idi idp idt iia iib iid iii iip iit ipa ipb ipd ipi ipp ipt ita itb itd iti itp itt p-p paa pab pad pai pap pat pba pbb pbd pbi pbp pbt pda pdb pdd pdi pdp pdt pia pib pid pii pip pit ppa ppb ppd ppi ppp ppt pt- pta ptb ptd pti ptp ptt taa tab tad tai tap tat tba tbb tbd tbi tbp tbt tda tdb tdd tdi tdp tdt tia tib tid tii tip tit tpa tpb tpd tpi tpp tpt tta ttb ttd tti ttp ttt