-ic c-- ccc ccd cci ccr cct cdc cdd cdi cdr cdt cdy ci- cic cid cii cir cit crc crd cri crr crt cry ctc ctd cti ctr ctt cty cyc cyd cyr cyt dcc dcd dci dcr dct ddc ddd ddi ddr ddt ddy di- dic did dii dir dit diy drc drd dri drr drt dry dtc dtd dti dtr dtt dty dy- dyc dyd dyr dyy i-d icc icd ici icr ict icy idc idd idi idr idt idy iic iid iii iir iit ir- irc ird iri irr irt iry itc itd iti itt ity iyc iyr iyt iyy rcc rcd rci rcr rct rdc rdd rdi rdr rdt rdy ric rid rii rir rit riy rrc rrd rri rrr rrt rtc rtd rti rtr rtt rty ry- ryc ryd ryr ryy tcc tcd tci tcr tct tdc tdd tdi tdr tdt tdy tic tid tii tir tit tiy trc trd tri trr trt try ttc ttd tti ttr ttt tty tyc tyd tyr tyt ycc ycd yci ycy ydt ydy yid yii yir yit yrc yrt ytc ytd ytr ytt yyc yyt yyy