-er -ey -up b-p b-u bbb bbe bbp bbr bbs bbu bby be- beb bee bep ber bes beu bey bpb bpe bpp bpr bps bpu bpy brb bre brp brr brs bru bry bsb bse bsp bsr bss bsu bsy bub bue bup bur bus buu buy by- bye byp byr bys byu ebb ebe ebp ebr ebs ebu eby eeb eee eep eer ees eey ep- epb epe epp epr eps epu erb ere erp err ers eru ery es- esb ese esp esr ess esu esy eu- eub eue eup eur eus eye eyp eyr eys p-p pbb pbe pbp pbr pbs pbu pby peb pee pep per pes peu pey ppb ppe ppp ppr pps ppu prb pre prp prr prs pru pry ps- psb pse psp psr pss psu psy pub pue pup pur pus puu puy py- pyb pye pyr pys pyu rbb rbe rbp rbr rbs rbu re- reb ree rep rer res reu rey rpb rpe rpp rpr rps rpu rrb rrp rrr rrs rru rsb rse rsp rsr rss rsu rub rue rup rur rus ruu ruy ry- rye ryr rys ryu ryy sbb sbe sbp sbr sbs sbu sby se- seb see sep ser ses seu sey spb spe spp spr sps spu spy sr- srb sre srp srr srs sry ss- ssb sse ssp ssr sss ssu sub sue sup sur sus suu suy sy- syb sye syp syr sys syu ubb ube ubp ubr ubs ubu uby ueb uee uep uer ues uey up- upb upe upp upr ups upu ur- urb ure urp urr urs uru ury usb use usp usr uss usu uue uur uus uuu uys uyu ybe ybp ybr ybs yby yeb yee yep yer yes yey yps ypu yre yrp yrs yru ysb yse ysp ysr yss ysu ysy yue yup yur yus yuu yuy yyb yye yys yyu yyy