-ic c-- ccc cci cco cct ccx ci- cic cii cio cit cix co- coc coi coo cot cox coy ctc cti cto ctt ctx cty cxc cxi cxo cxt cxx cyc cyo cyt icc ici ico ict icy iic iii iio iit iix io- ioc ioi ioo iot itc iti ito itt itx ity ixc ixi ixy iyc iyo iyt iyy o-i oc- occ oci oco oct ocx oic oii oio oit oo- ooc ooi ooo oot oox ot- otc oti oto ott ox- oxc oxi oxo oxt oxx oxy oyi oyo t-x tcc tci tco tct tcx tic tii tio tit tix tiy to- toc toi too tot tox toy ttc tti tto ttt ttx tty txi txt tyc tyo tyt xci xcx xic xii xio xit xix xoc xoi xoo xot xox xtc xti xtx xty xxi xxo xxx xxy xyy ycc yci yco ycy yii yio yit yoc yoi yoo yot yox yoy ytc yto ytt yxy yyc yyt yyy