-ic a-a a-c a-i aaa aac aai aak aao aas ac- aca acc aci ack aco acs ai- aia aic aii aik aio ais aka akc aki akk ako aks aoa aoc aoi aok aoo aos as- asa asc asi ask aso ass c-- caa cac cai cak cao cas cca ccc cci cck cco ccs ci- cia cic cii cik cio cis cka ckc cki cko cks co- coa coc coi cok coo cos csa csc csi csk cso css ia- iaa iac iai iao ias ica icc ici ick ico ics iia iic iii iio iis ika ikc iki ikk iko iks io- ioa ioc ioi ioo ios is- isa isc isi isk iso iss ka- kaa kac kai kak kao kas kca kcc kci kck kcs kia kic kii kik kio kis kkc kki kkk kks koa koc koi kok koo kos ksa ksc ksi ksk kso kss o-i oaa oac oai oak oao oas oc- oca occ oci ock oco ocs oia oic oii oik oio ois oka okc oki okk oko oks oo- ooa ooc ooi ook ooo oos os- osa osc osi osk oso oss saa sac sai sak sao sas sca scc sci sck sco scs sia sic sii sik sio sis sk- ska skc ski skk sko sks soa soc soi sok soo sos ss- ssa ssc ssi ssk sso sss