-er -ic a-a a-c a-i a-z aaa aac aae aai aap aar aaz ac- aca acc ace aci acp acr acz aea aec aee aei aep aer aez ai- aia aic aie aii aip air aiz ap- apa apc ape api app apr ar- ara arc are ari arp arr arz az- aza aze azi azp azz c-- caa cac cae cai cap car caz cca ccc cce cci ccp ccr ccz ce- cea cec cee cei cep cer cez ci- cia cic cie cii cip cir cpa cpc cpe cpi cpp cpr cpz cra crc cre cri crp crr crz cz- czc cze eaa eac eae eai eap ear eaz ec- eca ecc ece eci ecr eea eec eee eep eer eia eic eie eii eip eir ep- epa epc epe epi epp epr epz era erc ere eri erp err erz eze ezr ezz ia- iaa iac iae iai iap iar iaz ica icc ice ici icp icr icz ie- iea iec iee iei iep ier iia iic iie iii iip iir ipa ipc ipe ipi ipp ipr ir- ira irc ire iri irp irr iza ize izi izz p-p paa pac pae pai pap par paz pca pcc pce pci pcp pcr pea pec pee pei pep per pez pia pic pie pii pip pir piz ppa ppc ppe ppi ppp ppr ppz pra prc pre pri prp prr prz pzc pzp ra- raa rac rae rai rap rar raz rca rcc rce rci rcp rcr re- rea rec ree rei rep rer rez ria ric rie rii rip rir riz rpa rpc rpe rpi rpp rpr rpz rra rrc rri rrp rrr rza rze zaa zac zai zap zar zaz zce zea zec zee zep zer zez zia zie zip zir ziz zpc zpe zpi zpp zpr zrp zzr zzz