-er -ic c-- ccc cce cci cck ccp ccr cct ce- cec cee cei cek cep cer cet ci- cic cie cii cik cip cir cit ckc cki ckt cpc cpe cpi cpk cpp cpr cpt crc cre cri crk crp crr crt ctc cte cti ctk ctp ctr ctt ec- ecc ece eci eck ecr ect eec eee eek eep eer eet eic eie eii eik eip eir eit ekc eke eki ekp ekr ekt ep- epc epe epi epp epr ept erc ere eri erk erp err ert etc ete eti etk etp etr ett icc ice ici ick icp icr ict ie- iec iee iei iek iep ier iet iic iie iii iip iir iit ikc ike iki ikk ikr ikt ipc ipe ipi ipp ipr ipt ir- irc ire iri irk irp irr irt itc ite iti itk itp itt k-t kcc kce kci kck kcp kcr kct ke- kec kee kei kek kep ker ket kic kie kii kik kip kir kit kkc kke kki kkk kkp kkr kkt kpc kpe kpi kpk kpp kpr kpt krc kri krk krp krr krt ktc kte ktk ktp ktr ktt p-p pcc pce pci pck pcp pcr pct pec pee pei pek pep per pet pic pie pii pik pip pir pit pkc pke pki pkp pkr pkt ppc ppe ppi ppk ppp ppr ppt prc pre pri prk prp prr prt pt- ptc pte pti ptk ptp ptr ptt rcc rce rci rcp rcr rct re- rec ree rei rek rep rer ret ric rie rii rik rip rir rit rkc rke rkk rkp rkt rpc rpe rpi rpk rpp rpr rpt rrc rri rrk rrp rrr rrt rtc rte rti rtk rtp rtr rtt tcc tce tci tck tcp tcr tct te- tec tee tei tek tep ter tet tic tie tii tik tip tir tit tkc tke tkk tkp tkr tkt tpc tpe tpi tpk tpp tpr tpt trc tre tri trk trp trr trt ttc tte tti ttk ttp ttr ttt