-er -ic c-- ccc ccd cce ccf cci ccl ccr ccs ccu cdc cdd cde cdf cdi cdl cdr cds cdu ce- cec ced cee cef cei cel cer ces ceu cfc cfd cfe cff cfi cfl cfr cfs cfu ci- cic cid cie cif cii cil cir cis ciu cl- clc cld cle clf cli cll clr cls clu crc crd cre crf cri crl crr crs cru csc csd cse csf csi csl csr css csu cuc cud cue cuf cui cul cur cus cuu dcc dcd dce dcf dci dcl dcr dcs dcu ddc ddd dde ddf ddi ddl ddr dds ddu de- dec ded dee def dei del der des deu dfc dfd dfe dff dfi dfl dfr dfs dfu di- dic did die dif dii dil dir dis diu dl- dlc dld dle dlf dli dll dlr dls dlu drc drd dre dri drl drr drs dru dsc dsd dse dsf dsi dsl dsr dss dsu duc dud due duf dui dul dur dus ec- ecc ecd ece ecf eci ecl ecr ecs ecu ed- edc edd ede edf edi edl edr eds edu eec eed eee eef eel eer ees ef- efc efd efe eff efi efl efr efs eic eid eie eif eii eil eir eis eiu elc eld ele elf eli ell elr els elu erc erd ere erf eri erl err ers eru es- esc esd ese esf esi esl esr ess esu eu- euc eud eue euf eui eul eur eus fcc fcd fce fcf fci fcl fcr fcs fcu fdc fdd fde fdf fdi fdl fdr fds fdu fec fed fee fef fei fel fer fes feu ffc ffd ffe fff ffi ffl ffr ffs ffu fic fid fie fif fii fil fir fis fiu flc fld fle flf fli fll flr fls flu frc frd fre frf fri frl frr frs fru fsc fsd fse fsf fsi fsl fsr fss fsu fud fue fuf fui ful fur fus fuu i-d i-f icc icd ice icf ici icl icr ics icu idc idd ide idf idi idl idr ids idu ie- iec ied iee ief iei iel ier ies ifc ifd ife iff ifi ifl ifr ifs ifu iic iid iie iif iii iil iir iis iiu il- ilc ild ile ilf ili ill ilr ils ilu ir- irc ird ire irf iri irl irr irs iru is- isc isd ise isf isi isl isr iss isu iu- iuc iud iue iui iur ius lcc lcd lce lcf lci lcl lcr lcs lcu ldc ldd lde ldf ldi ldl ldr lds ldu lec led lee lef lei lel ler les leu lfc lfd lfe lff lfi lfl lfr lfs lfu lic lid lie lif lii lil lir lis liu llc lld lle llf lli lll llr lls llu lrc lrd lrf lri lrr lrs lru lsc lsd lse lsf lsi lsl lsr lss lsu luc lud lue luf lui lul lur lus luu rcc rcd rce rcf rci rcl rcr rcs rcu rdc rdd rde rdf rdi rdl rdr rds rdu re- rec red ree ref rei rel rer res reu rfc rfd rfe rff rfi rfl rfr rfs rfu ric rid rie rif rii ril rir ris rlc rld rle rlf rli rll rlr rls rlu rrc rrd rrf rri rrl rrr rrs rru rsc rsd rse rsf rsi rsl rsr rss rsu ruc rud rue ruf rui rur rus ruu scc scd sce scf sci scl scr scs scu sdc sdd sde sdf sdi sdl sdr sds sdu se- sec sed see sef sei sel ser ses seu sfc sfd sfe sff sfi sfl sfr sfs sfu sic sid sie sif sii sil sir sis siu slc sld sle slf sli sll slr sls slu sr- src srd sre srf sri srl srr srs ss- ssc ssd sse ssf ssi ssl ssr sss ssu suc sud sue suf sui sul sur sus suu ucc ucd uce ucf uci ucl ucr ucs ucu udc udd ude udf udi udl udr uds udu uec ued uee uef uei uel uer ues ufc ufd ufe uff ufi ufl ufr ufs ufu uic uid uie uif uii uil uir uis uiu ulc uld ule ulf uli ull ulr uls ulu ur- urc urd ure urf uri url urr urs uru usc usd use usf usi usl usr uss usu uuc uue uur uus uuu