b-p bbb bbd bbe bbo bbp bbt bdb bdd bde bdo bdp bdt be- beb bed bee beo bep bet bob bod boe boo bop bot bpb bpd bpe bpo bpp bpt btb btd bte bto btp btt dbb dbd dbe dbo dbp dbt ddb ddd dde ddo ddp ddt de- deb ded dee deo dep det dob dod doe doo dop dot dpb dpd dpe dpo dpp dpt dtb dtd dte dto dtp dtt ebb ebd ebe ebo ebp ebt ed- edb edd ede edo edp edt eeb eed eee eeo eep eet eo- eob eod eoe eoo eop eot ep- epb epd epe epo epp ept etb etd ete eto etp ett ob- obb obd obe obo obp obt odb odd ode odo odp odt oeb oed oee oeo oep oet oo- oob ood ooo oop oot op- opb opd ope opo opp opt ot- otb otd ote oto otp ott p-p pbb pbd pbe pbo pbp pbt pdb pdd pde pdo pdp pdt peb ped pee peo pep pet pob pod poe poo pop pot ppb ppd ppe ppo ppp ppt pt- ptb ptd pte pto ptp ptt tbb tbd tbe tbo tbp tbt tdb tdd tde tdo tdp tdt te- teb ted tee teo tep tet to- tob tod toe too top tot tpb tpd tpe tpo tpp tpt ttb ttd tte tto ttp ttt