-er -ic c-- ccc cce ccf cci cco ccr ccu ce- cec cee cef cei ceo cer ceu cfc cfe cff cfi cfo cfr cfu ci- cic cie cif cii cio cir ciu co- coc coe cof coi coo cor cou crc cre crf cri cro crr cru cuc cue cuf cui cuo cur cuu ec- ecc ece ecf eci eco ecr ecu eec eee eef eeo eer ef- efc efe eff efi efo efr eic eie eif eii eio eir eiu eo- eoc eoe eof eoi eoo eor eou erc ere erf eri ero err eru eu- euc eue euf eui eur fcc fce fcf fci fco fcr fcu fec fee fef fei feo fer feu ffc ffe fff ffi ffo ffr ffu fic fie fif fii fir fiu foc foe fof foi foo for fou frc fre frf fri fro frr fru fue fuf fui fuo fur fuu i-f icc ice icf ici ico icr icu ie- iec iee ief iei ier ifc ife iff ifi ifo ifr ifu iic iie iif iii iio iir iiu io- ioc ioe iof ioi ioo ior iou ir- irc ire irf iri iro irr iru iu- iuc iue iui iur o-i oc- occ ocf oci oco ocr ocu oec oee oef oei oeo oer of- ofc ofe off ofi ofo ofr ofu oic oie oif oii oio oir oiu oo- ooc oof ooi ooo oor or- orc ore orf ori oro orr oru ou- ouc oue ouf oui ouo our rcc rce rcf rci rco rcr rcu re- rec ree ref rei reo rer reu rfc rfe rff rfi rfo rfr rfu ric rie rif rii rio rir roc roe rof roi roo ror rou rrc rrf rri rrr rru ruc rue ruf rui ruo rur ruu ucc uce ucf uci uco ucr ucu uec uee uef uei uer ufc ufe uff ufi ufo ufr ufu uic uie uif uii uio uir uiu uoc uoe uoo uor ur- urc ure urf uri uro urr uru uuc uue uur uuu