-ic c-- ccc cch cci cck cco ccs ch- chc chh chi chk cho chs ci- cic cih cii cik cio cis ckc ckh cki cko cks co- coc coh coi cok coo cos csc csh csi csk cso css h-i hcc hch hci hck hco hcs hhc hhh hhi hhk hho hhs hic hih hii hik hio his hkh hki hkk hko hks hoc hoh hoi hok hoo hos hsc hsh hsi hsk hss icc ich ici ick ico ics ihc ihh ihi ihk iho ihs iic iih iii iio iis ikc iki ikk iko iks io- ioc ioh ioi ioo ios is- isc ish isi isk iso iss kcc kch kci kck kcs khh khi khk kho khs kic kih kii kik kio kis kkc kkh kki kkk kks koc koh koi kok koo kos ksc ksh ksi ksk kso kss o-i oc- occ och oci ock oco ocs ohc ohh ohi oho ohs oic oii oik oio ois okc oki okk oko oks oo- ooc ooh ooi ook ooo oos os- osc osh osi osk oso oss scc sch sci sck sco scs sh- shc shh shi shk sho shs sic sih sii sik sio sis sk- skc skh ski skk sko sks soc soh soi sok soo sos ss- ssc ssh ssi ssk sso sss