-ic c-- ccc ccd cce ccf cci ccl ccs cdc cdd cde cdf cdi cdl cds ce- cec ced cee cef cei cel ces cfc cfd cfe cff cfi cfl cfs ci- cic cid cie cif cii cil cis cl- clc cld cle clf cli cll cls csc csd cse csf csi csl css dcc dcd dce dcf dci dcl dcs ddc ddd dde ddf ddi ddl dds de- dec ded dee def dei del des dfc dfd dfe dff dfi dfl dfs di- dic did die dif dii dil dis dl- dlc dld dle dlf dli dll dls dsc dsd dse dsf dsi dsl dss ec- ecc ecd ece ecf eci ecl ecs ed- edc edd ede edf edi edl eds eec eed eee eef eel ees ef- efc efd efe eff efi efl efs eic eid eie eif eii eil eis elc eld ele elf eli ell els es- esc esd ese esf esi esl ess fcc fcd fce fcf fci fcl fcs fdc fdd fde fdf fdi fdl fds fec fed fee fef fei fel fes ffc ffd ffe fff ffi ffl ffs fic fid fie fif fii fil fis flc fld fle flf fli fll fls fsc fsd fse fsf fsi fsl fss i-d i-f icc icd ice icf ici icl ics idc idd ide idf idi idl ids ie- iec ied iee ief iei iel ies ifc ifd ife iff ifi ifl ifs iic iid iie iif iii iil iis il- ilc ild ile ilf ili ill ils is- isc isd ise isf isi isl iss lcc lcd lce lcf lci lcl lcs ldc ldd lde ldf ldi ldl lds lec led lee lef lei lel les lfc lfd lfe lff lfi lfl lfs lic lid lie lif lii lil lis llc lld lle llf lli lll lls lsc lsd lse lsf lsi lsl lss scc scd sce scf sci scl scs sdc sdd sde sdf sdi sdl sds se- sec sed see sef sei sel ses sfc sfd sfe sff sfi sfl sfs sic sid sie sif sii sil sis slc sld sle slf sli sll sls ss- ssc ssd sse ssf ssi ssl sss