a-a a-c aaa aac aao aar aas aau aav ac- aca acc aco acr acs acu acv aoa aoc aoo aor aos aou aov ar- ara arc aro arr ars aru arv as- asa asc aso asr ass asu asv au- aua auc auo aur aus auv av- ava avc avo avr avs avu c-- caa cac cao car cas cau cav cca ccc cco ccr ccs ccu ccv co- coa coc coo cor cos cou cov cra crc cro crr crs cru crv csa csc cso csr css csu csv cua cuc cuo cur cus cuu cuv cva cvc cvo cvr cvs cvu cvv oaa oac oao oar oas oau oav oc- oca occ oco ocr ocs ocu ocv oo- ooa ooc ooo oor oos oov or- ora orc oro orr ors oru orv os- osa osc oso osr oss osu osv ou- oua ouc ouo our ous ov- ova ovc ovo ovs ovv ra- raa rac rao rar ras rau rav rca rcc rco rcr rcs rcu rcv roa roc roo ror ros rou rov rra rrc rrr rrs rru rsa rsc rso rsr rss rsu rsv rua ruc ruo rur rus ruu ruv rva rvc rvo rvr rvs rvu rvv saa sac sao sar sas sau sav sca scc sco scr scs scu scv soa soc soo sor sos sou sov sr- sra src sro srr srs srv ss- ssa ssc sso ssr sss ssu ssv sua suc suo sur sus suu suv sva svc svo svr svs svu svv ua- uaa uac uao uar uas uau uav uca ucc uco ucr ucs ucu ucv uoa uoc uoo uor uos ur- ura urc uro urr urs uru usa usc uso usr uss usu usv uua uuc uur uus uuu uva uvc uvo uvs uvu uvv v-a vaa vac vao var vas vau vav vca vcc vco vcr vcs vcu voa voc voo vor vos vou vov vra vrc vrr vrs vru vsa vsc vso vsr vss vsu vsv vur vus vuv vva vvc vvo vvr vvs vvv