-er -ic c-- ccc ccd cce cci cck ccn ccr ccu cdc cdd cde cdi cdk cdn cdq cdr cdu ce- cec ced cee cei cek cen ceq cer ceu ci- cic cid cie cii cik cin ciq cir ciu ckc ckd cki cn- cnc cnd cne cni cnn cnr cnu cqc cqd cqi crc crd cre cri crk crn crq crr cru cuc cud cue cui cuk cun cuq cur cuu dcc dcd dce dci dck dcn dcr dcu ddc ddd dde ddi ddk ddn ddq ddr ddu de- dec ded dee dei dek den deq der deu di- dic did die dii dik din diq dir diu dkc dke dki dkk dkr dku dnc dnd dne dni dnk dnn dnq dnr dqe dqn drc drd dre dri drk drn drq drr dru duc dud due dui duk dun dur ec- ecc ecd ece eci eck ecn ecq ecr ecu ed- edc edd ede edi edk edn edr edu eec eed eee eek een eer eic eid eie eii eik ein eir eiu ekc ekd eke eki ekr eku en- enc end ene eni enk enn enr enu eqe eqn eqq equ erc erd ere eri erk ern erq err eru eu- euc eud eue eui eun eur i-d icc icd ice ici ick icn icq icr icu idc idd ide idi idk idn idq idr idu ie- iec ied iee iei iek ien ier iic iid iie iii iin iir iiu ikc ike iki ikk ikr iku in- inc ind ine ini ink inn inq inr inu iqc iqd iqe iqu ir- irc ird ire iri irk irn irq irr iru iu- iuc iud iue iui iur kcc kcd kce kci kck kcn kcr kcu kdc kde kdk kdr kdu ke- kec ked kee kei kek ken ker kic kid kie kii kik kin kir kiu kkc kke kki kkk kkn kkr kku kn- knc knd kne kni knk knn knr knu krc krd kri krk krn krr kru kuc kud kue kui kuk kun kur kuu n-i ncc ncd nce nci nck ncn ncr ncu ndc ndd nde ndi ndk ndn ndr ndu ne- nec ned nee nei nek nen ner neu nic nid nie nii nik nin niq nir niu nkc nke nki nkk nkn nkr nku nnc nne nni nnk nnn nnu nqc nrc nrd nre nri nrk nrn nrr nru nuc nud nue nui nuk nun nuq nur nuu qcc qcd qci qdr qec qed qee qen qic qid qie qik qin qir qiu qki qnd qne qni qnk qqk qqq qqu qrc qre qri qru qu- qud que qui qur rcc rcd rce rci rcn rcr rcu rdc rdd rde rdi rdn rdr rdu re- rec red ree rei rek ren req rer reu ric rid rie rii rik rin riq rir rkc rke rkk rku rnc rnd rni rnn rnr rnu rqc rqn rrc rrd rri rrk rrn rrq rrr rru ruc rud rue rui ruk run rur ruu ucc ucd uce uci uck ucn ucr ucu udc udd ude udi udk udn udr udu uec ued uee uei uen uer uic uid uie uii uin uiq uir uiu ukc uke uki ukk ukn ukr uku un- unc und une uni unk unn unq unr unu ur- urc urd ure uri urk urn urr uru uuc uue uun uur uuu