-er -ic c-- ccc ccd cce cci cck ccn ccr cct cdc cdd cde cdi cdk cdn cdr cdt ce- cec ced cee cei cek cen cer cet ci- cic cid cie cii cik cin cir cit ckc ckd cki ckt cn- cnc cnd cne cni cnn cnr cnt crc crd cre cri crk crn crr crt ctc ctd cte cti ctk ctn ctr ctt dcc dcd dce dci dck dcn dcr dct ddc ddd dde ddi ddk ddn ddr ddt de- dec ded dee dei dek den der det di- dic did die dii dik din dir dit dkc dke dki dkk dkr dkt dnc dnd dne dni dnk dnn dnr dnt drc drd dre dri drk drn drr drt dtc dtd dte dti dtk dtn dtr dtt ec- ecc ecd ece eci eck ecn ecr ect ed- edc edd ede edi edk edn edr edt eec eed eee eek een eer eet eic eid eie eii eik ein eir eit ekc ekd eke eki ekr ekt en- enc end ene eni enk enn enr ent erc erd ere eri erk ern err ert etc etd ete eti etk etn etr ett i-d icc icd ice ici ick icn icr ict idc idd ide idi idk idn idr idt ie- iec ied iee iei iek ien ier iet iic iid iie iii iin iir iit ikc ike iki ikk ikr ikt in- inc ind ine ini ink inn inr int ir- irc ird ire iri irk irn irr irt itc itd ite iti itk itn itt k-t kcc kcd kce kci kck kcn kcr kct kdc kde kdk kdr kdt ke- kec ked kee kei kek ken ker ket kic kid kie kii kik kin kir kit kkc kke kki kkk kkn kkr kkt kn- knc knd kne kni knk knn knr knt krc krd kri krk krn krr krt ktc kte ktk ktn ktr ktt n-i ncc ncd nce nci nck ncn ncr nct ndc ndd nde ndi ndk ndn ndr ndt ne- nec ned nee nei nek nen ner net nic nid nie nii nik nin nir nit nkc nke nki nkk nkn nkr nkt nnc nne nni nnk nnn nnt nrc nrd nre nri nrk nrn nrr nrt ntc ntd nte nti ntk ntn ntr ntt rcc rcd rce rci rcn rcr rct rdc rdd rde rdi rdn rdr rdt re- rec red ree rei rek ren rer ret ric rid rie rii rik rin rir rit rkc rke rkk rkt rnc rnd rni rnn rnr rnt rrc rrd rri rrk rrn rrr rrt rtc rtd rte rti rtk rtn rtr rtt tcc tcd tce tci tck tcn tcr tct tdc tdd tde tdi tdk tdn tdr tdt te- tec ted tee tei tek ten ter tet tic tid tie tii tik tin tir tit tkc tke tkk tkr tkt tnc tnd tne tni tnk tnn tnr tnt trc trd tre tri trk trn trr trt ttc ttd tte tti ttk ttn ttr ttt