ddd ddf ddo ddp ddr dds ddy dfd dff dfo dfp dfr dfs dod dof doo dop dor dos doy dpd dpf dpo dpp dpr dps drd dro drp drr drs dry dsd dsf dso dsp dsr dss dsy dy- dyd dyo dyp dyr dys dyy fdd fdf fdo fdp fdr fds ffd fff ffo ffp ffr ffs ffy fof foo fop for fos foy fpd fpo fpp fpr fps fpy frd frf fro frp frr frs fry fsd fsf fso fsp fsr fss fy- fyo fyp odd odf odo odp odr ods of- ofd off ofo ofp ofr ofs oo- ood oof ooo oop oor oos op- opd opf opo opp opr ops opy or- ord orf oro orp orr ors ory os- osd osf oso osp osr oss oyd oyo oys p-p pdd pdf pdo pdp pdr pds pfd pff pfo pfp pfr pfs pfy pod pof poo pop por pos poy ppd ppf ppo ppp ppr pps prd prf pro prp prr prs pry ps- psd psf pso psp psr pss psy py- pyd pyf pyo pyr pys rdd rdf rdo rdp rdr rds rdy rfd rff rfo rfp rfr rfs rod rof roo rop ror ros roy rpd rpf rpo rpp rpr rps rrd rrf rrp rrr rrs rsd rsf rso rsp rsr rss ry- ryd ryf ryo ryr rys ryy sdd sdf sdo sdp sdr sds sdy sfd sff sfo sfp sfr sfs sod sof soo sop sor sos soy spd spf spo spp spr sps spy sr- srd srf sro srp srr srs sry ss- ssd ssf sso ssp ssr sss sy- syd syp syr sys ydo yds ydy yfd yff yfr yfs yod yof yoo yop yor yos yoy ypd ypf ypo yps yrf yro yrp yrs yso ysp ysr yss ysy yyf yys yyy