-ly -ol bbb bbl bbo bbs bby blb bll blo bls bly bob bol boo bos boy bsb bsl bso bss bsy by- byl byo bys lbb lbl lbo lbs llb lll llo lls lly lob lol loo los loy lsb lsl lso lss lyl lyo lys ob- obb obl obo obs oby olb oll olo ols oly oo- oob ool ooo oos os- osb osl oso oss oyl oyo oys sbb sbl sbo sbs sby slb sll slo sls sly sob sol soo sos soy ss- ssb ssl sso sss sy- syb syl sys ybl ybs yby yll yls yly yob yol yoo yos yoy ysb ysl yso yss ysy yyb yys yyy