-ey b-p bbb bbe bbo bbp bbs bby be- beb bee beo bep bes bey bob boe boo bop bos boy bpb bpe bpo bpp bps bpy bsb bse bso bsp bss bsy by- bye byo byp bys ebb ebe ebo ebp ebs eby eeb eee eeo eep ees eey eo- eob eoe eoo eop eos ep- epb epe epo epp eps es- esb ese eso esp ess esy eye eyo eyp eys ob- obb obe obo obp obs oby oeb oee oeo oep oes oey oo- oob ooo oop oos op- opb ope opo opp ops opy os- osb ose oso osp oss oye oyo oys p-p pbb pbe pbo pbp pbs pby peb pee peo pep pes pey pob poe poo pop pos poy ppb ppe ppo ppp pps ps- psb pse pso psp pss psy py- pyb pye pyo pys sbb sbe sbo sbp sbs sby se- seb see seo sep ses sey sob soe soo sop sos soy spb spe spo spp sps spy ss- ssb sse sso ssp sss sy- syb sye syp sys ybe ybp ybs yby yeb yee yeo yep yes yey yob yoe yoo yop yos yoy ypo yps ysb yse yso ysp yss ysy yyb yye yys yyy