-ic c-- ccc cch cci cck cco ccx ch- chc chh chi chk cho chx ci- cic cih cii cik cio cix ckc ckh cki cko ckx co- coc coh coi cok coo cox cxc cxh cxi cxk cxo cxx h-i hcc hch hci hck hco hhc hhh hhi hhk hho hic hih hii hik hio hix hkh hki hkk hko hoc hoh hoi hok hoo hox hxc icc ich ici ick ico ihc ihh ihi ihk iho iic iih iii iio iix ikc iki ikk iko ikx io- ioc ioh ioi ioo ixc ixi kcc kch kci kck kcx khh khi khk kho kic kih kii kik kio kix kkc kkh kki kkk koc koh koi kok koo kxo o-i oc- occ och oci ock oco ocx ohc ohh ohi oho oic oii oik oio okc oki okk oko oo- ooc ooh ooi ook ooo oox ox- oxc oxi oxo oxx xch xci xcx xic xii xio xix xoc xoi xok xoo xox xxi xxo xxx