-er -ic c-- ccc cce cci cck ccn cco ccr cct ce- cec cee cei cek cen ceo cer cet ci- cic cie cii cik cin cio cir cit ckc cki cko ckt cn- cnc cne cni cnn cno cnr cnt co- coc coe coi cok con coo cor cot crc cre cri crk crn cro crr crt ctc cte cti ctk ctn cto ctr ctt ec- ecc ece eci eck ecn eco ecr ect eec eee eek een eeo eer eet eic eie eii eik ein eio eir eit ekc eke eki eko ekr ekt en- enc ene eni enk enn eno enr ent eo- eoc eoe eoi eok eon eoo eor eot erc ere eri erk ern ero err ert etc ete eti etk etn eto etr ett icc ice ici ick icn ico icr ict ie- iec iee iei iek ien ier iet iic iie iii iin iio iir iit ikc ike iki ikk iko ikr ikt in- inc ine ini ink inn ino inr int io- ioc ioe ioi ion ioo ior iot ir- irc ire iri irk irn iro irr irt itc ite iti itk itn ito itt k-t kcc kce kci kck kcn kcr kct ke- kec kee kei kek ken keo ker ket kic kie kii kik kin kio kir kit kkc kke kki kkk kkn kkr kkt kn- knc kne kni knk knn kno knr knt koc koe koi kok kon koo kor kot krc kri krk krn kro krr krt ktc kte ktk ktn kto ktr ktt n-i ncc nce nci nck ncn nco ncr nct ne- nec nee nei nek nen neo ner net nic nie nii nik nin nio nir nit nkc nke nki nkk nkn nko nkr nkt nnc nne nni nnk nnn nno nnt no- noc noe noi nok non noo nor not nrc nre nri nrk nrn nro nrr nrt ntc nte nti ntk ntn nto ntr ntt o-i oc- occ oci ock ocn oco ocr oct oec oee oei oen oeo oer oet oic oie oii oik oin oio oir oit okc oke oki okk oko okr on- onc one oni onk onn ono onr ont oo- ooc ooi ook oon ooo oor oot or- orc ore ori ork orn oro orr ort ot- otc ote oti otk otn oto otr ott rcc rce rci rcn rco rcr rct re- rec ree rei rek ren reo rer ret ric rie rii rik rin rio rir rit rkc rke rkk rko rkt rnc rni rnn rno rnr rnt roc roe roi rok ron roo ror rot rrc rri rrk rrn rrr rrt rtc rte rti rtk rtn rto rtr rtt tcc tce tci tck tcn tco tcr tct te- tec tee tei tek ten teo ter tet tic tie tii tik tin tio tir tit tkc tke tkk tko tkr tkt tnc tne tni tnk tnn tno tnr tnt to- toc toe toi tok ton too tor tot trc tre tri trk trn tro trr trt ttc tte tti ttk ttn tto ttr ttt