b-p bbb bbe bbp bbt bbw be- beb bee bep bet bew bpb bpe bpp bpt bpw btb bte btp btt btw bwb bwp ebb ebe ebp ebt ebw eeb eee eep eet eew ep- epb epe epp ept epw etb ete etp ett etw ewb ewe ewp ewt eww p-p pbb pbe pbp pbt pbw peb pee pep pet pew ppb ppe ppp ppt ppw pt- ptb pte ptp ptt ptw pwb pwe pwp pwt tbb tbe tbp tbt te- teb tee tep tet tew tpb tpe tpp tpt tpw ttb tte ttp ttt ttw twb twe twp twt tww wbb wbe wbt wbw web wee wep wet wew wpb wpe wpp wpt wtb wtp wtt wtw wwe wwp wwt www