-ey b-p bbb bbe bbo bbp bbt bby be- beb bee beo bep bet bey bob boe boo bop bot boy bpb bpe bpo bpp bpt bpy btb bte bto btp btt bty by- bye byo byp byt ebb ebe ebo ebp ebt eby eeb eee eeo eep eet eey eo- eob eoe eoo eop eot ep- epb epe epo epp ept etb ete eto etp ett ety eye eyo eyp eyt ob- obb obe obo obp obt oby oeb oee oeo oep oet oey oo- oob ooo oop oot op- opb ope opo opp opt opy ot- otb ote oto otp ott oye oyo p-p pbb pbe pbo pbp pbt pby peb pee peo pep pet pey pob poe poo pop pot poy ppb ppe ppo ppp ppt pt- ptb pte pto ptp ptt pty py- pyb pye pyo pyt tbb tbe tbo tbp tbt te- teb tee teo tep tet tey to- tob toe too top tot toy tpb tpe tpo tpp tpt ttb tte tto ttp ttt tty tye tyo typ tyt ybe ybp yby yeb yee yeo yep yet yey yob yoe yoo yop yot yoy ypo yte yto ytp ytt yyb yye yyt yyy