-ic c-- ccc cci cco cct ccx ci- cic cii cio cit cix co- coc coi coo cot cox ctc cti cto ctt ctx cxc cxi cxo cxt cxx icc ici ico ict iic iii iio iit iix io- ioc ioi ioo iot itc iti ito itt itx ixc ixi 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 t-x tcc tci tco tct tcx tic tii tio tit tix to- toc toi too tot tox ttc tti tto ttt ttx txi txt xci xcx xic xii xio xit xix xoc xoi xoo xot xox xtc xti xtx xxi xxo xxx