-ic a-a a-c a-i aaa aac aad aae aaf aai aas ac- aca acc acd ace acf aci acs ad- ada adc add ade adf adi ads aea aec aed aee aef aei aes af- afa afc afd afe aff afi afs ai- aia aic aid aie aif aii ais as- asa asc asd ase asf asi ass c-- caa cac cad cae caf cai cas cca ccc ccd cce ccf cci ccs cda cdc cdd cde cdf cdi cds ce- cea cec ced cee cef cei ces cfa cfc cfd cfe cff cfi cfs ci- cia cic cid cie cif cii cis csa csc csd cse csf csi css daa dac dad dae daf dai das dca dcc dcd dce dcf dci dcs dda ddc ddd dde ddf ddi dds de- dea dec ded dee def dei des dfa dfc dfd dfe dff dfi dfs di- dia dic did die dif dii dis dsa dsc dsd dse dsf dsi dss eaa eac ead eae eaf eai eas ec- eca ecc ecd ece ecf eci ecs ed- eda edc edd ede edf edi eds eea eec eed eee eef ees ef- efa efc efd efe eff efi efs eia eic eid eie eif eii eis es- esa esc esd ese esf esi ess faa fac fad fae faf fai fas fca fcc fcd fce fcf fci fcs fda fdc fdd fde fdf fdi fds fea fec fed fee fef fei fes ffa ffc ffd ffe fff ffi ffs fia fic fid fie fif fii fis fsa fsc fsd fse fsf fsi fss i-d i-f ia- iaa iac iad iae iaf iai ias ica icc icd ice icf ici ics ida idc idd ide idf idi ids ie- iea iec ied iee ief iei ies ifa ifc ifd ife iff ifi ifs iia iic iid iie iif iii iis is- isa isc isd ise isf isi iss saa sac sad sae saf sai sas sca scc scd sce scf sci scs sda sdc sdd sde sdf sdi sds se- sea sec sed see sef sei ses sfa sfc sfd sfe sff sfi sfs sia sic sid sie sif sii sis ss- ssa ssc ssd sse ssf ssi sss