-er -ic c-- ccc cce cci cck ccr cct ce- cec cee cei cek cer cet ci- cic cie cii cik cir cit ckc cki ckt crc cre cri crk crr crt ctc cte cti ctk ctr ctt ec- ecc ece eci eck ecr ect eec eee eek eer eet eic eie eii eik eir eit ekc eke eki ekr ekt erc ere eri erk err ert etc ete eti etk etr ett icc ice ici ick icr ict ie- iec iee iei iek ier iet iic iie iii iir iit ikc ike iki ikk ikr ikt ir- irc ire iri irk irr irt itc ite iti itk itt k-t kcc kce kci kck kcr kct ke- kec kee kei kek ker ket kic kie kii kik kir kit kkc kke kki kkk kkr kkt krc kri krk krr krt ktc kte ktk ktr ktt rcc rce rci rcr rct re- rec ree rei rek rer ret ric rie rii rik rir rit rkc rke rkk rkt rrc rri rrk rrr rrt rtc rte rti rtk rtr rtt tcc tce tci tck tcr tct te- tec tee tei tek ter tet tic tie tii tik tir tit tkc tke tkk tkr tkt trc tre tri trk trr trt ttc tte tti ttk ttr ttt