-er -ic a-a a-c a-i aaa aac aae aai aap aar aav ac- aca acc ace aci acp acr acv aea aec aee aei aep aer aev ai- aia aic aie aii aip air aiv ap- apa apc ape api app apr apv ar- ara arc are ari arp arr arv av- ava avc ave avi avp avr c-- caa cac cae cai cap car cav cca ccc cce cci ccp ccr ccv ce- cea cec cee cei cep cer cev ci- cia cic cie cii cip cir civ cpa cpc cpe cpi cpp cpr cpv cra crc cre cri crp crr crv cva cvc cve cvi cvp cvr cvv eaa eac eae eai eap ear eav ec- eca ecc ece eci ecr ecv eea eec eee eep eer eev eia eic eie eii eip eir eiv ep- epa epc epe epi epp epr era erc ere eri erp err erv eva evc eve evi evp evr evv i-v ia- iaa iac iae iai iap iar iav ica icc ice ici icp icr icv ie- iea iec iee iei iep ier iev iia iic iie iii iip iir ipa ipc ipe ipi ipp ipr ipv ir- ira irc ire iri irp irr irv iva ivc ive ivi ivp ivr ivv p-p paa pac pae pai pap par pav pca pcc pce pci pcp pcr pcv pea pec pee pei pep per pev pia pic pie pii pip pir piv ppa ppc ppe ppi ppp ppr ppv pra prc pre pri prp prr prv pva pvc pve pvi pvp pvr pvv ra- raa rac rae rai rap rar rav rca rcc rce rci rcp rcr rcv re- rea rec ree rei rep rer rev ria ric rie rii rip rir riv rpa rpc rpe rpi rpp rpr rpv rra rrc rri rrp rrr rva rvc rve rvi rvp rvr rvv v-a v-e vaa vac vae vai vap var vav vca vcc vce vci vcp vcr vea vec vee vei vep ver vi- via vic vie vii vip vir viv vpa vpc vpe vpi vpp vpr vra vrc vre vri vrp vrr vva vvc vvi vvr vvv