-ly -ol bbb bbl bbo bbr bbs bby blb bll blo blr bls bly bob bol boo bor bos boy brb brl bro brr brs bry bsb bsl bso bsr bss bsy by- byl byo byr bys lbb lbl lbo lbr lbs llb lll llo llr lls lly lob lol loo lor los loy lrb lro lrr lrs lry lsb lsl lso lsr lss lyl lyo lyr lys ob- obb obl obo obr obs oby olb oll olo ols oly oo- oob ool ooo oor oos or- orb orl oro orr ors ory os- osb osl oso osr oss oyl oyo oys rbb rbl rbo rbr rbs rll rlo rlr rls rly rob rol roo ror ros roy rrb rrl rrr rrs rsb rsl rso rsr rss ry- ryo ryr rys ryy sbb sbl sbo sbr sbs sby slb sll slo slr sls sly sob sol soo sor sos soy sr- srb srl sro srr srs sry ss- ssb ssl sso ssr sss sy- syb syl syr sys ybl ybr ybs yby yll ylr yls yly yob yol yoo yor yos yoy yro yrs ysb ysl yso ysr yss ysy yyb yys yyy