b-p bbb bbd bbe bbp bbt bdb bdd bde bdp bdt be- beb bed bee bep bet bpb bpd bpe bpp bpt btb btd bte btp btt dbb dbd dbe dbp dbt ddb ddd dde ddp ddt de- deb ded dee dep det dpb dpd dpe dpp dpt dtb dtd dte dtp dtt ebb ebd ebe ebp ebt ed- edb edd ede edp edt eeb eed eee eep eet ep- epb epd epe epp ept etb etd ete etp ett p-p pbb pbd pbe pbp pbt pdb pdd pde pdp pdt peb ped pee pep pet ppb ppd ppe ppp ppt pt- ptb ptd pte ptp ptt tbb tbd tbe tbp tbt tdb tdd tde tdp tdt te- teb ted tee tep tet tpb tpd tpe tpp tpt ttb ttd tte ttp ttt