b-p bbb bbo bbp bbr bbs bbt bby bob boo bop bor bos bot boy bpb bpo bpp bpr bps bpt bpy brb bro brp brr brs brt bry bsb bso bsp bsr bss bst bsy btb bto btp btr bts btt bty by- byo byp byr bys byt ob- obb obo obp obr obs obt oby oo- oob ooo oop oor oos oot op- opb opo opp opr ops opt opy or- orb oro orp orr ors ort ory os- osb oso osp osr oss ost ot- otb oto otp otr ots ott oyo oys p-p pbb pbo pbp pbr pbs pbt pby pob poo pop por pos pot poy ppb ppo ppp ppr pps ppt prb pro prp prr prs prt pry ps- psb pso psp psr pss pst psy pt- ptb pto ptp ptr pts ptt pty py- pyb pyo pyr pys pyt rbb rbo rbp rbr rbs rbt rob roo rop ror ros rot roy rpb rpo rpp rpr rps rpt rrb rrp rrr rrs rrt rsb rso rsp rsr rss rst rtb rto rtp rtr rts rtt rty ry- ryo ryr rys ryy sbb sbo sbp sbr sbs sbt sby sob soo sop sor sos sot soy spb spo spp spr sps spt spy sr- srb sro srp srr srs srt sry ss- ssb sso ssp ssr sss sst stb sto stp str sts stt sty sy- syb syp syr sys syt tbb tbo tbp tbr tbs tbt to- tob too top tor tos tot toy tpb tpo tpp tpr tps tpt trb tro trp trr trs trt try tsb tso tsp tsr tss tst tsy ttb tto ttp ttr tts ttt tty tyo typ tyr tys tyt ybp ybr ybs yby yob yoo yop yor yos yot yoy ypo yps yro yrp yrs yrt ysb yso ysp ysr yss yst ysy yto ytp ytr yts ytt yyb yys yyt yyy