-er -ic c-- ccc ccd cce ccf cci ccm ccr ccs ccu cdc cdd cde cdf cdi cdm cdr cds cdu ce- cec ced cee cef cei cem cer ces ceu cfc cfd cfe cff cfi cfm cfr cfs cfu ci- cic cid cie cif cii cim cir cis ciu cmc cmd cme cmf cmi cmm cmr cms cmu crc crd cre crf cri crm crr crs cru csc csd cse csf csi csm csr css csu cuc cud cue cuf cui cum cur cus cuu dcc dcd dce dcf dci dcm dcr dcs dcu ddc ddd dde ddf ddi ddm ddr dds ddu de- dec ded dee def dei dem der des deu dfc dfd dfe dff dfi dfm dfr dfs dfu di- dic did die dif dii dim dir dis diu dmc dmd dme dmf dmi dmm dmr dms dmu drc drd dre dri drm drr drs dru dsc dsd dse dsf dsi dsm dsr dss dsu duc dud due duf dui dum dur dus ec- ecc ecd ece ecf eci ecm ecr ecs ecu ed- edc edd ede edf edi edm edr eds edu eec eed eee eef eem eer ees ef- efc efd efe eff efi efm efr efs eic eid eie eif eii eim eir eis eiu em- emc emd eme emf emi emm emr ems emu erc erd ere erf eri erm err ers eru es- esc esd ese esf esi esm esr ess esu eu- euc eud eue euf eui eur eus fcc fcd fce fcf fci fcm fcr fcs fcu fdc fdd fde fdf fdi fdm fdr fds fdu fec fed fee fef fei fem fer fes feu ffc ffd ffe fff ffi ffm ffr ffs ffu fic fid fie fif fii fim fir fis fiu fmc fmd fme fmf fmi fmm fmr fms fmu frc frd fre frf fri frm frr frs fru fsc fsd fse fsf fsi fsm fsr fss fsu fud fue fuf fui fum fur fus fuu i-d i-f icc icd ice icf ici icm icr ics icu idc idd ide idf idi idm idr ids idu ie- iec ied iee ief iei iem ier ies ifc ifd ife iff ifi ifm ifr ifs ifu iic iid iie iif iii iim iir iis iiu im- imc imd ime imf imi imm ims imu ir- irc ird ire irf iri irm irr irs iru is- isc isd ise isf isi ism isr iss isu iu- iuc iud iue iui ium iur ius m-f m-r mc- mcc mcd mce mcf mci mcm mcr mcs mcu mdc mdd mde mdf mdi mdm mdr mds mdu mec med mee mef mei mem mer mes meu mfc mfd mfe mff mfi mfm mfr mfs mfu mi- mic mid mie mif mii mim mir mis miu mmc mmd mme mmf mmi mmm mmr mms mmu mrc mrd mre mrf mri mrm mrr mrs mru msc msd mse msf msi msm msr mss msu muc mud mue muf mui mum mur mus muu rcc rcd rce rcf rci rcm rcr rcs rcu rdc rdd rde rdf rdi rdm rdr rds rdu re- rec red ree ref rei rem rer res reu rfc rfd rfe rff rfi rfm rfr rfs rfu ric rid rie rif rii rim rir ris rmc rmd rme rmf rmi rmm rmr rms rrc rrd rrf rri rrm rrr rrs rru rsc rsd rse rsf rsi rsm rsr rss rsu ruc rud rue ruf rui rum rur rus ruu scc scd sce scf sci scm scr scs scu sdc sdd sde sdf sdi sdm sdr sds sdu se- sec sed see sef sei sem ser ses seu sfc sfd sfe sff sfi sfm sfr sfs sfu sic sid sie sif sii sim sir sis siu smc smd sme smf smi smm smr sms smu sr- src srd sre srf sri srm srr srs ss- ssc ssd sse ssf ssi ssm ssr sss ssu suc sud sue suf sui sum sur sus suu ucc ucd uce ucf uci ucm ucr ucs ucu udc udd ude udf udi udm udr uds udu uec ued uee uef uei uem uer ues ufc ufd ufe uff ufi ufm ufr ufs ufu uic uid uie uif uii uim uir uis uiu um- umc umd ume umf umi umm umr ums umu ur- urc urd ure urf uri urm urr urs uru usc usd use usf usi usm usr uss usu uuc uue uum uur uus uuu