-ic a-a a-c a-i aaa aac aaf aai aan aao aas ac- aca acc acf aci acn aco acs af- afa afc aff afi afn afo afs ai- aia aic aif aii ain aio ais an- ana anc anf ani ann ano ans aoa aoc aof aoi aon aoo aos as- asa asc asf asi asn aso ass c-- caa cac caf cai can cao cas cca ccc ccf cci ccn cco ccs cfa cfc cff cfi cfn cfo cfs ci- cia cic cif cii cin cio cis cn- cna cnc cnf cni cnn cno cns co- coa coc cof coi con coo cos csa csc csf csi csn cso css faa fac faf fai fan fao fas fca fcc fcf fci fcn fco fcs ffa ffc fff ffi ffn ffo ffs fia fic fif fii fin fis fna fnc fnf fni fnn fns foa foc fof foi fon foo fos fsa fsc fsf fsi fsn fso fss i-f ia- iaa iac iaf iai ian iao ias ica icc icf ici icn ico ics ifa ifc iff ifi ifn ifo ifs iia iic iif iii iin iio iis in- ina inc inf ini inn ino ins io- ioa ioc iof ioi ion ioo ios is- isa isc isf isi isn iso iss n-i naa nac naf nai nan nao nas nca ncc ncf nci ncn nco ncs nfa nfc nff nfi nfn nfo nfs nia nic nif nii nin nio nis nna nnc nnf nni nnn nno nns no- noa noc nof noi non noo nos nsa nsc nsf nsi nsn nso nss o-i oaa oac oaf oai oan oao oas oc- oca occ ocf oci ocn oco ocs of- ofa ofc off ofi ofn ofo ofs oia oic oif oii oin oio ois on- ona onc onf oni onn ono ons oo- ooa ooc oof ooi oon ooo oos os- osa osc osf osi osn oso oss saa sac saf sai san sao sas sca scc scf sci scn sco scs sfa sfc sff sfi sfn sfo sfs sia sic sif sii sin sio sis sna snc snf sni snn sno sns soa soc sof soi son soo sos ss- ssa ssc ssf ssi ssn sso sss