-er -ic a-a a-c a-i a-t aaa aac aae aai aak aap aar aat ac- aca acc ace aci ack acp acr act aea aec aee aei aek aep aer aet ai- aia aic aie aii aik aip air ait aka akc ake aki akk akp akr ap- apa apc ape api apk app apr apt ar- ara arc are ari ark arp arr art at- ata atc ate ati atp atr att c-- caa cac cae cai cak cap car cat cca ccc cce cci cck ccp ccr cct ce- cea cec cee cei cek cep cer cet ci- cia cic cie cii cik cip cir cit cka ckc cki ckt cpa cpc cpe cpi cpk cpp cpr cpt cra crc cre cri crk crp crr crt cta ctc cte cti ctk ctp ctr ctt eaa eac eae eai eak eap ear eat ec- eca ecc ece eci eck ecr ect eea eec eee eek eep eer eet eia eic eie eii eik eip eir eit eka ekc eke eki ekp ekr ekt ep- epa epc epe epi epp epr ept era erc ere eri erk erp err ert eta etc ete eti etk etp etr ett ia- iaa iac iae iai iap iar iat ica icc ice ici ick icp icr ict ie- iea iec iee iei iek iep ier iet iia iic iie iii iip iir iit ika ikc ike iki ikk ikr ikt ipa ipc ipe ipi ipp ipr ipt ir- ira irc ire iri irk irp irr irt ita itc ite iti itk itp itt k-t ka- kaa kac kae kai kak kap kar kat kca kcc kce kci kck kcp kcr kct ke- kea kec kee kei kek kep ker ket kia kic kie kii kik kip kir kit kkc kke kki kkk kkp kkr kkt kpa kpc kpe kpi kpk kpp kpr kpt kra krc kri krk krp krr krt kta ktc kte ktk ktp ktr ktt p-p paa pac pae pai pak pap par pat pca pcc pce pci pck pcp pcr pct pea pec pee pei pek pep per pet pia pic pie pii pik pip pir pit pka pkc pke pki pkp pkr pkt ppa ppc ppe ppi ppk ppp ppr ppt pra prc pre pri prk prp prr prt pt- pta ptc pte pti ptk ptp ptr ptt ra- raa rac rae rai rak rap rar rat rca rcc rce rci rcp rcr rct re- rea rec ree rei rek rep rer ret ria ric rie rii rik rip rir rit rkc rke rkk rkp rkt rpa rpc rpe rpi rpk rpp rpr rpt rra rrc rri rrk rrp rrr rrt rta rtc rte rti rtk rtp rtr rtt taa tac tae tai tak tap tar tat tca tcc tce tci tck tcp tcr tct te- tea tec tee tei tek tep ter tet tia tic tie tii tik tip tir tit tka tkc tke tkk tkp tkr tkt tpa tpc tpe tpi tpk tpp tpr tpt tra trc tre tri trk trp trr trt tta ttc tte tti ttk ttp ttr ttt