-er -ic c-- ccc cce cci ccn ccr ccv ce- cec cee cei cen cer cev ci- cic cie cii cin cir civ cn- cnc cne cni cnn cnr cnv crc cre cri crn crr crv cvc cve cvi cvn cvr cvv ec- ecc ece eci ecn ecr ecv eec eee een eer eev eic eie eii ein eir eiv en- enc ene eni enn enr env erc ere eri ern err erv evc eve evi evn evr evv i-v icc ice ici icn icr icv ie- iec iee iei ien ier iev iic iie iii iin iir in- inc ine ini inn inr inv ir- irc ire iri irn irr irv ivc ive ivi ivr ivv n-i ncc nce nci ncn ncr ncv ne- nec nee nei nen ner nev nic nie nii nin nir niv nnc nne nni nnn nnv nrc nre nri nrn nrr nrv nvc nve nvi nvn nvv rcc rce rci rcn rcr rcv re- rec ree rei ren rer rev ric rie rii rin rir riv rnc rni rnn rnr rnv rrc rri rrn rrr rvc rve rvi rvn rvr rvv v-e vcc vce vci vcn vcr vec vee vei ven ver vi- vic vie vii vin vir viv vn- vni vnr vnv vrc vre vri vrn vrr vvc vvi vvr vvv