-ic c-- ccc ccd ccf cci cco cdc cdd cdf cdi cdo cdy cfc cfd cff cfi cfo ci- cic cid cif cii cio co- coc cod cof coi coo coy cyc cyd cyf cyo dcc dcd dcf dci dco ddc ddd ddf ddi ddo ddy dfc dfd dff dfi dfo di- dic did dif dii dio diy doc dod dof doi doo doy dy- dyc dyd dyo dyy fcc fcd fcf fci fco fcy fdc fdd fdf fdi fdo ffc ffd fff ffi ffo ffy fic fid fif fii foc fof foi foo foy fy- fyc fyi fyo i-d i-f icc icd icf ici ico icy idc idd idf idi ido idy ifc ifd iff ifi ifo ify iic iid iif iii iio io- ioc iod iof ioi ioo iyc iyo iyy o-i oc- occ ocd ocf oci oco odc odd odf odi odo of- ofc ofd off ofi ofo oic oid oif oii oio oo- ooc ood oof ooi ooo oyd oyi oyo ycc ycd ycf yci yco ycy ydo ydy yfc yfd yff yid yif yii yio yoc yod yof yoi yoo yoy yyc yyf yyy