a-a a-c aaa aac aad aao aas aav ac- aca acc acd aco acs acv ad- ada adc add ado ads adv aoa aoc aod aoo aos aov as- asa asc asd aso ass asv av- ava avc avd avo avs c-- caa cac cad cao cas cav cca ccc ccd cco ccs ccv cda cdc cdd cdo cds cdv co- coa coc cod coo cos cov csa csc csd cso css csv cva cvc cvd cvo cvs cvv daa dac dad dao das dav dca dcc dcd dco dcs dcv dda ddc ddd ddo dds doa doc dod doo dos dov dsa dsc dsd dso dss dsv dva dvc dvd dvs oaa oac oad oao oas oav oc- oca occ ocd oco ocs ocv oda odc odd odo ods odv oo- ooa ooc ood ooo oos oov os- osa osc osd oso oss osv ov- ova ovc ovd ovo ovs ovv saa sac sad sao sas sav sca scc scd sco scs scv sda sdc sdd sdo sds sdv soa soc sod soo sos sov ss- ssa ssc ssd sso sss ssv sva svc svd svo svs svv v-a vaa vac vad vao vas vav vca vcc vcd vco vcs vdc vdd vdo vds vdv voa voc vod voo vos vov vsa vsc vsd vso vss vsv vva vvc vvo vvs vvv