-ic c-- ccc cce cch cci cco ccx ce- cec cee ceh cei ceo cex ch- chc che chh chi cho chx ci- cic cie cih cii cio cix co- coc coe coh coi coo cox cxc cxh cxi cxo cxx ec- ecc ece ech eci eco ecx eec eee eeo eex ehc ehe ehh ehi eho eic eie eii eio eix eo- eoc eoe eoh eoi eoo ex- exc exe exh exi exo exx h-i hcc hce hch hci hco he- hec hee heh hei heo hex hhc hhe hhh hhi hho hic hie hih hii hio hix hoc hoe hoh hoi hoo hox hxc icc ice ich ici ico ie- iec iee iei iex ihc ihe ihh ihi iho iic iie iih iii iio iix io- ioc ioe ioh ioi ioo ixc ixe ixi o-i oc- occ och oci oco ocx oec oee oeh oei oeo oex ohc ohe ohh ohi oho oic oie oii oio oo- ooc ooh ooi ooo oox ox- oxc oxi oxo oxx xch xci xcx xee xex xic xie xii xio xix xoc xoi xoo xox xxi xxo xxx