-er -ic c-- ccc ccd cce ccf cci ccr ccu cdc cdd cde cdf cdi cdr cdu ce- cec ced cee cef cei cer ceu cfc cfd cfe cff cfi cfr cfu ci- cic cid cie cif cii cir ciu crc crd cre crf cri crr cru cuc cud cue cuf cui cur cuu dcc dcd dce dcf dci dcr dcu ddc ddd dde ddf ddi ddr ddu de- dec ded dee def dei der deu dfc dfd dfe dff dfi dfr dfu di- dic did die dif dii dir diu drc drd dre dri drr dru duc dud due duf dui dur ec- ecc ecd ece ecf eci ecr ecu ed- edc edd ede edf edi edr edu eec eed eee eef eer ef- efc efd efe eff efi efr eic eid eie eif eii eir eiu erc erd ere erf eri err eru eu- euc eud eue euf eui eur fcc fcd fce fcf fci fcr fcu fdc fdd fde fdf fdi fdr fdu fec fed fee fef fei fer feu ffc ffd ffe fff ffi ffr ffu fic fid fie fif fii fir fiu frc frd fre frf fri frr fru fud fue fuf fui fur fuu i-d i-f icc icd ice icf ici icr icu idc idd ide idf idi idr idu ie- iec ied iee ief iei ier ifc ifd ife iff ifi ifr ifu iic iid iie iif iii iir iiu ir- irc ird ire irf iri irr iru iu- iuc iud iue iui iur rcc rcd rce rcf rci rcr rcu rdc rdd rde rdf rdi rdr rdu re- rec red ree ref rei rer reu rfc rfd rfe rff rfi rfr rfu ric rid rie rif rii rir rrc rrd rrf rri rrr rru ruc rud rue ruf rui rur ruu ucc ucd uce ucf uci ucr ucu udc udd ude udf udi udr udu uec ued uee uef uei uer ufc ufd ufe uff ufi ufr ufu uic uid uie uif uii uir uiu ur- urc urd ure urf uri urr uru uuc uue uur uuu