-ic c-- ccc ccd ccf cci cco cct cdc cdd cdf cdi cdo cdt cfc cfd cff cfi cfo cft ci- cic cid cif cii cio cit co- coc cod cof coi coo cot ctc ctd ctf cti cto ctt dcc dcd dcf dci dco dct ddc ddd ddf ddi ddo ddt dfc dfd dff dfi dfo dft di- dic did dif dii dio dit doc dod dof doi doo dot dtc dtd dtf dti dto dtt fcc fcd fcf fci fco fct fdc fdd fdf fdi fdo fdt ffc ffd fff ffi ffo fft fic fid fif fii fit foc fof foi foo fot ftc ftd ftf fti fto ftt i-d i-f icc icd icf ici ico ict idc idd idf idi ido idt ifc ifd iff ifi ifo ift iic iid iif iii iio iit io- ioc iod iof ioi ioo iot itc itd itf iti ito itt o-i oc- occ ocd ocf oci oco oct odc odd odf odi odo odt of- ofc ofd off ofi ofo oft oic oid oif oii oio oit oo- ooc ood oof ooi ooo oot ot- otc otd otf oti oto ott tcc tcd tcf tci tco tct tdc tdd tdf tdi tdo tdt tfc tfd tff tfi tfo tft tic tid tif tii tio tit to- toc tod tof toi too tot ttc ttd ttf tti tto ttt