-ic c-- ccc ccd cci cct cdc cdd cdi cdt cdy ci- cic cid cii cit ctc ctd cti ctt cty cyc cyd cyt dcc dcd dci dct ddc ddd ddi ddt ddy di- dic did dii dit diy dtc dtd dti dtt dty dy- dyc dyd dyy i-d icc icd ici ict icy idc idd idi idt idy iic iid iii iit itc itd iti itt ity iyc iyt iyy tcc tcd tci tct tdc tdd tdi tdt tdy tic tid tii tit tiy ttc ttd tti ttt tty tyc tyd tyt ycc ycd yci ycy ydt ydy yid yii yit ytc ytd ytt yyc yyt yyy