-ey b-p bbb bbd bbe bbp bbs bby bdb bdd bde bdp bds bdy be- beb bed bee bep bes bey bpb bpd bpe bpp bps bpy bsb bsd bse bsp bss bsy by- byd bye byp bys dbb dbd dbe dbp dbs dby ddb ddd dde ddp dds ddy de- deb ded dee dep des dey dpb dpd dpe dpp dps dsb dsd dse dsp dss dsy dy- dyb dyd dye dyp dys dyy ebb ebd ebe ebp ebs eby ed- edb edd ede edp eds edy eeb eed eee eep ees eey ep- epb epd epe epp eps es- esb esd ese esp ess esy eyd eye eyp eys p-p pbb pbd pbe pbp pbs pby pdb pdd pde pdp pds peb ped pee pep pes pey ppb ppd ppe ppp pps ps- psb psd pse psp pss psy py- pyb pyd pye pys sbb sbd sbe sbp sbs sby sdb sdd sde sdp sds sdy se- seb sed see sep ses sey spb spd spe spp sps spy ss- ssb ssd sse ssp sss sy- syb syd sye syp sys ybe ybp ybs yby yde yds ydy yeb yed yee yep yes yey ypd yps ysb yse ysp yss ysy yyb yye yys yyy