-er c-- ccc ccd cce ccf cck ccn cco ccr ccu cdc cdd cde cdf cdk cdn cdo cdr cdu ce- cec ced cee cef cek cen ceo cer ceu cfc cfd cfe cff cfk cfn cfo cfr cfu ckc ckd cko cn- cnc cnd cne cnf cnn cno cnr cnu co- coc cod coe cof cok con coo cor cou crc crd cre crf crk crn cro crr cru cuc cud cue cuf cuk cun cuo cur cuu dcc dcd dce dcf dck dcn dco dcr dcu ddc ddd dde ddf ddk ddn ddo ddr ddu de- dec ded dee def dek den deo der deu dfc dfd dfe dff dfk dfn dfo dfr dfu dkc dke dkk dko dkr dku dnc dnd dne dnf dnk dnn dno dnr doc dod doe dof dok don doo dor dou drc drd dre drk drn dro drr dru duc dud due duf duk dun duo dur ec- ecc ecd ece ecf eck ecn eco ecr ecu ed- edc edd ede edf edk edn edo edr edu eec eed eee eef eek een eeo eer ef- efc efd efe eff efo efr ekc ekd eke ekf eko ekr eku en- enc end ene enf enk enn eno enr enu eo- eoc eod eoe eof eok eon eoo eor eou erc erd ere erf erk ern ero err eru eu- euc eud eue euf eun eur fcc fcd fce fcf fck fcn fco fcr fcu fdc fdd fde fdf fdk fdn fdo fdr fdu fec fed fee fef fek fen feo fer feu ffc ffd ffe fff ffk ffn ffo ffr ffu fkc fkf fkk fnc fnd fne fnf fnk fnn fnr fnu foc foe fof fok fon foo for fou frc frd fre frf frk frn fro frr fru fud fue fuf fuk fun fuo fur fuu kcc kcd kce kck kcn kcr kcu kdc kde kdf kdk kdo kdr kdu ke- kec ked kee kef kek ken keo ker kfc kfd kff kfo kfu kkc kke kkk kkn kkr kku kn- knc knd kne knf knk knn kno knr knu koc kod koe kof kok kon koo kor kou krc krd krf krk krn kro krr kru kuc kud kue kuk kun kur kuu ncc ncd nce ncf nck ncn nco ncr ncu ndc ndd nde ndf ndk ndn ndo ndr ndu ne- nec ned nee nef nek nen neo ner neu nfc nfd nfe nff nfk nfn nfo nfr nfu nkc nke nkf nkk nkn nko nkr nku nnc nne nnf nnk nnn nno nnu no- noc nod noe nof nok non noo nor nou nrc nrd nre nrf nrk nrn nro nrr nru nuc nud nue nuk nun nuo nur nuu oc- occ ocd ocf ock ocn oco ocr ocu odc odd ode odf odn odo odr odu oec oed oee oef oen oeo oer of- ofc ofd ofe off ofn ofo ofr ofu okc okd oke okk oko okr oku on- onc ond one onf onk onn ono onr onu oo- ooc ood oof ook oon ooo oor or- orc ord ore orf ork orn oro orr oru ou- ouc oud oue ouf ouk oun ouo our rcc rcd rce rcf rcn rco rcr rcu rdc rdd rde rdf rdn rdo rdr rdu re- rec red ree ref rek ren reo rer reu rfc rfd rfe rff rfk rfn rfo rfr rfu rkc rke rkf rkk rko rku rnc rnd rnn rno rnr rnu roc rod roe rof rok ron roo ror rou rrc rrd rrf rrk rrn rrr rru ruc rud rue ruf ruk run ruo rur ruu ucc ucd uce ucf uck ucn uco ucr ucu udc udd ude udf udk udn udo udr udu uec ued uee uef uen uer ufc ufd ufe uff ufn ufo ufr ufu ukc uke ukf ukk ukn ukr uku un- unc und une unf unk unn uno unr unu uoc uod uoe uok uon uoo uor ur- urc urd ure urf urk urn uro urr uru uuc uue uun uur uuu