-ic c-- ccc cch cci cco ccs ccx ch- chc chh chi cho chs chx ci- cic cih cii cio cis cix co- coc coh coi coo cos cox csc csh csi cso css csx cxc cxh cxi cxo cxs cxx h-i hcc hch hci hco hcs hhc hhh hhi hho hhs hic hih hii hio his hix hoc hoh hoi hoo hos hox hsc hsh hsi hss hsx hxc icc ich ici ico ics ihc ihh ihi iho ihs iic iih iii iio iis iix io- ioc ioh ioi ioo ios is- isc ish isi iso iss ixc ixi o-i oc- occ och oci oco ocs ocx ohc ohh ohi oho ohs oic oii oio ois oo- ooc ooh ooi ooo oos oox os- osc osh osi oso oss osx ox- oxc oxi oxo oxx scc sch sci sco scs scx sh- shc shh shi sho shs sic sih sii sio sis six soc soh soi soo sos sox ss- ssc ssh ssi sso sss ssx sxc sxi sxs xch xci xcx xic xii xio xis xix xoc xoi xoo xos xox xsc xsi xss xxi xxo xxx