-er a-a a-c aaa aac aae aam aar aav ac- aca acc ace acm acr acv aea aec aee aem aer aev ama amc ame amm amr amv ar- ara arc are arm arr arv av- ava avc ave avm avr c-- caa cac cae cam car cav cca ccc cce ccm ccr ccv ce- cea cec cee cem cer cev cma cmc cme cmm cmr cmv cra crc cre crm crr crv cva cvc cve cvm cvr cvv eaa eac eae eam ear eav ec- eca ecc ece ecm ecr ecv eea eec eee eem eer eev em- ema emc eme emm emr emv era erc ere erm err erv eva evc eve evm evr evv m-r m-v maa mac mae mam mar mav mc- mca mcc mce mcm mcr mcv mea mec mee mem mer mev mma mmc mme mmm mmr mmv mra mrc mre mrm mrr mrv mva mvc mve mvm mvr mvv ra- raa rac rae ram rar rav rca rcc rce rcm rcr rcv re- rea rec ree rem rer rev rma rmc rme rmm rmr rmv rra rrc rrm rrr rva rvc rve rvm rvr rvv v-a v-e vaa vac vae vam var vav vca vcc vce vcm vcr vea vec vee vem ver vm- vma vmc vmm vmr vra vrc vre vrm vrr vva vvc vvm vvr vvv