-er a-a a-c aaa aac aad aae aah aar aav ac- aca acc acd ace ach acr acv ad- ada adc add ade adh adr adv aea aec aed aee aeh aer aev aha ahc ahd ahe ahh ahr ahv ar- ara arc ard are arh arr arv av- ava avc avd ave avh avr c-- caa cac cad cae cah car cav cca ccc ccd cce cch ccr ccv cda cdc cdd cde cdh cdr cdv ce- cea cec ced cee ceh cer cev ch- cha chc chd che chh chr chv cra crc crd cre crh crr crv cva cvc cvd cve cvh cvr cvv daa dac dad dae dah dar dav dca dcc dcd dce dcr dcv dda ddc ddd dde ddh ddr de- dea dec ded dee deh der dev dh- dha dhc dhd dhe dhh dhr dra drc drd dre drr drv dva dvc dvd dve dvh dvr eaa eac ead eae eah ear eav ec- eca ecc ecd ece ech ecr ecv ed- eda edc edd ede edh edr eea eec eed eee eer eev eha ehc ehd ehe ehh ehr ehv era erc erd ere erh err erv eva evc evd eve evh evr evv haa hac had hae hah har hav hca hcc hcd hce hch hcr hcv hda hdc hdd hde hdh hdr hdv he- hea hec hed hee heh her hev hha hhc hhd hhe hhh hhr hhv hr- hra hrc hrd hre hrh hrr hrv hv- hva hvc hvd hvr hvv ra- raa rac rad rae rah rar rav rca rcc rcd rce rch rcr rcv rda rdc rdd rde rdh rdr rdv re- rea rec red ree reh rer rev rh- rha rhc rhd rhe rhh rhr rhv rra rrc rrd rrh rrr rva rvc rvd rve rvh rvr rvv v-a v-e vaa vac vad vae vah var vav vca vcc vcd vce vch vcr vdc vdd vde vdh vdr vdv vea vec ved vee veh ver vh- vha vhc vhd vhe vra vrc vrd vre vrh vrr vva vvc vvr vvv