a-a a-c aaa aac aad aao aar aas aav ac- aca acc acd aco acr acs acv ad- ada adc add ado adr ads adv aoa aoc aod aoo aor aos aov ar- ara arc ard aro arr ars arv as- asa asc asd aso asr ass asv av- ava avc avd avo avr avs c-- caa cac cad cao car cas cav cca ccc ccd cco ccr ccs ccv cda cdc cdd cdo cdr cds cdv co- coa coc cod coo cor cos cov cra crc crd cro crr crs crv csa csc csd cso csr css csv cva cvc cvd cvo cvr cvs cvv daa dac dad dao dar das dav dca dcc dcd dco dcr dcs dcv dda ddc ddd ddo ddr dds doa doc dod doo dor dos dov dra drc drd dro drr drs drv dsa dsc dsd dso dsr dss dsv dva dvc dvd dvr dvs oaa oac oad oao oar oas oav oc- oca occ ocd oco ocr ocs ocv oda odc odd odo odr ods odv oo- ooa ooc ood ooo oor oos oov or- ora orc ord oro orr ors orv os- osa osc osd oso osr oss osv ov- ova ovc ovd ovo ovs ovv ra- raa rac rad rao rar ras rav rca rcc rcd rco rcr rcs rcv rda rdc rdd rdo rdr rds rdv roa roc rod roo ror ros rov rra rrc rrd rrr rrs rsa rsc rsd rso rsr rss rsv rva rvc rvd rvo rvr rvs rvv saa sac sad sao sar sas sav sca scc scd sco scr scs scv sda sdc sdd sdo sdr sds sdv soa soc sod soo sor sos sov sr- sra src srd sro srr srs srv ss- ssa ssc ssd sso ssr sss ssv sva svc svd svo svr svs svv v-a vaa vac vad vao var vas vav vca vcc vcd vco vcr vcs vdc vdd vdo vdr vds vdv voa voc vod voo vor vos vov vra vrc vrd vrr vrs vsa vsc vsd vso vsr vss vsv vva vvc vvo vvr vvs vvv