-er a-a a-c aaa aac aad aae aan aap aar aav ac- aca acc acd ace acn acp acr acv ad- ada adc add ade adn adp adr adv aea aec aed aee aen aep aer aev an- ana anc and ane ann anp anr anv ap- apa apc apd ape apn app apr apv ar- ara arc ard are arn arp arr arv av- ava avc avd ave avn avp avr c-- caa cac cad cae can cap car cav cca ccc ccd cce ccn ccp ccr ccv cda cdc cdd cde cdn cdp cdr cdv ce- cea cec ced cee cen cep cer cev cn- cna cnc cnd cne cnn cnp cnr cnv cpa cpc cpd cpe cpn cpp cpr cpv cra crc crd cre crn crp crr crv cva cvc cvd cve cvn cvp cvr cvv daa dac dad dae dan dap dar dav dca dcc dcd dce dcn dcp dcr dcv dda ddc ddd dde ddn ddp ddr de- dea dec ded dee den dep der dev dna dnc dnd dne dnn dnp dnr dpa dpc dpd dpe dpn dpp dpr dpv dra drc drd dre drn drp drr drv dva dvc dvd dve dvn dvp dvr eaa eac ead eae ean eap ear eav ec- eca ecc ecd ece ecn ecr ecv ed- eda edc edd ede edn edp edr eea eec eed eee een eep eer eev en- ena enc end ene enn enp enr env ep- epa epc epd epe epn epp epr era erc erd ere ern erp err erv eva evc evd eve evn evp evr evv naa nac nad nae nan nap nar nav nca ncc ncd nce ncn ncp ncr ncv nda ndc ndd nde ndn ndp ndr ndv ne- nea nec ned nee nen nep ner nev nna nnc nne nnn nnp nnv npa npc npd npe npn npp npr npv nra nrc nrd nre nrn nrp nrr nrv nva nvc nvd nve nvn nvp nvv p-p paa pac pad pae pan pap par pav pca pcc pcd pce pcn pcp pcr pcv pda pdc pdd pde pdn pdp pdr pdv pea pec ped pee pen pep per pev pn- pna pnc pnd pne pnn pnp pnr pnv ppa ppc ppd ppe ppn ppp ppr ppv pra prc prd pre prn prp prr prv pva pvc pvd pve pvn pvp pvr pvv ra- raa rac rad rae ran rap rar rav rca rcc rcd rce rcn rcp rcr rcv rda rdc rdd rde rdn rdp rdr rdv re- rea rec red ree ren rep rer rev rna rnc rnd rnn rnp rnr rnv rpa rpc rpd rpe rpn rpp rpr rpv rra rrc rrd rrn rrp rrr rva rvc rvd rve rvn rvp rvr rvv v-a v-e vaa vac vad vae van vap var vav vca vcc vcd vce vcn vcp vcr vdc vdd vde vdp vdr vdv vea vec ved vee ven vep ver vn- vna vnd vnp vnr vnv vpa vpc vpd vpe vpn vpp vpr vra vrc vrd vre vrn vrp vrr vva vvc vvr vvv