a-a a-c aaa aac aah aao aas aav ac- aca acc ach aco acs acv aha ahc ahh aho ahs ahv aoa aoc aoh aoo aos aov as- asa asc ash aso ass asv av- ava avc avh avo avs c-- caa cac cah cao cas cav cca ccc cch cco ccs ccv ch- cha chc chh cho chs chv co- coa coc coh coo cos cov csa csc csh cso css csv cva cvc cvh cvo cvs cvv haa hac hah hao has hav hca hcc hch hco hcs hcv hha hhc hhh hho hhs hhv hoa hoc hoh hoo hos hov hsa hsc hsh hss hsv hv- hva hvc hvo hvs hvv oaa oac oah oao oas oav oc- oca occ och oco ocs ocv oha ohc ohh oho ohs oo- ooa ooc ooh ooo oos oov os- osa osc osh oso oss osv ov- ova ovc ovh ovo ovs ovv saa sac sah sao sas sav sca scc sch sco scs scv sh- sha shc shh sho shs shv soa soc soh soo sos sov ss- ssa ssc ssh sso sss ssv sva svc svo svs svv v-a vaa vac vah vao vas vav vca vcc vch vco vcs vh- vha vhc vho vhs voa voc voh voo vos vov vsa vsc vsh vso vss vsv vva vvc vvo vvs vvv