-er -ic c-- ccc ccd cce ccf cci ccl ccr ccs cdc cdd cde cdf cdi cdl cdr cds ce- cec ced cee cef cei cel cer ces cfc cfd cfe cff cfi cfl cfr cfs ci- cic cid cie cif cii cil cir cis cl- clc cld cle clf cli cll clr cls crc crd cre crf cri crl crr crs csc csd cse csf csi csl csr css dcc dcd dce dcf dci dcl dcr dcs ddc ddd dde ddf ddi ddl ddr dds de- dec ded dee def dei del der des dfc dfd dfe dff dfi dfl dfr dfs di- dic did die dif dii dil dir dis dl- dlc dld dle dlf dli dll dlr dls drc drd dre dri drl drr drs dsc dsd dse dsf dsi dsl dsr dss ec- ecc ecd ece ecf eci ecl ecr ecs ed- edc edd ede edf edi edl edr eds eec eed eee eef eel eer ees ef- efc efd efe eff efi efl efr efs eic eid eie eif eii eil eir eis elc eld ele elf eli ell elr els erc erd ere erf eri erl err ers es- esc esd ese esf esi esl esr ess fcc fcd fce fcf fci fcl fcr fcs fdc fdd fde fdf fdi fdl fdr fds fec fed fee fef fei fel fer fes ffc ffd ffe fff ffi ffl ffr ffs fic fid fie fif fii fil fir fis flc fld fle flf fli fll flr fls frc frd fre frf fri frl frr frs fsc fsd fse fsf fsi fsl fsr fss i-d i-f icc icd ice icf ici icl icr ics idc idd ide idf idi idl idr ids ie- iec ied iee ief iei iel ier ies ifc ifd ife iff ifi ifl ifr ifs iic iid iie iif iii iil iir iis il- ilc ild ile ilf ili ill ilr ils ir- irc ird ire irf iri irl irr irs is- isc isd ise isf isi isl isr iss lcc lcd lce lcf lci lcl lcr lcs ldc ldd lde ldf ldi ldl ldr lds lec led lee lef lei lel ler les lfc lfd lfe lff lfi lfl lfr lfs lic lid lie lif lii lil lir lis llc lld lle llf lli lll llr lls lrc lrd lrf lri lrr lrs lsc lsd lse lsf lsi lsl lsr lss rcc rcd rce rcf rci rcl rcr rcs rdc rdd rde rdf rdi rdl rdr rds re- rec red ree ref rei rel rer res rfc rfd rfe rff rfi rfl rfr rfs ric rid rie rif rii ril rir ris rlc rld rle rlf rli rll rlr rls rrc rrd rrf rri rrl rrr rrs rsc rsd rse rsf rsi rsl rsr rss scc scd sce scf sci scl scr scs sdc sdd sde sdf sdi sdl sdr sds se- sec sed see sef sei sel ser ses sfc sfd sfe sff sfi sfl sfr sfs sic sid sie sif sii sil sir sis slc sld sle slf sli sll slr sls sr- src srd sre srf sri srl srr srs ss- ssc ssd sse ssf ssi ssl ssr sss