obu oc- oca ocb occ ocd ocg och oci oco ocs ocu oda odb odc odd ode odg odh odi odo ods odu oea oeb oec oed oee oeg oeh oei oeo oes oga ogc ogd oge ogg ogh ogi ogo ogs oha ohc ohd ohe ohg ohh ohi oho ohs ohu oia oib oic oid oie oii oio ois oiu oo- ooa oob ooc ood oog ooh ooi ooo oos os- osa osb osc osd ose osg osh osi oso oss osu ou- oua ouc oud oue ouh oui ouo ous saa sab sac sad sae sag sah sai sao sas sau sba sbb sbc sbd sbe sbg sbh sbi sbo sbs sbu sca scb scc scd sce scg sch sci sco scs scu sda sdb sdc sdd sde sdg sdh sdi sdo sds sdu se- sea seb sec sed see seg seh sei seo ses seu sga sgb sgc sgd sge sgg sgh sgi sgo sgs sgu sh- sha shb shc shd she shg shh shi sho shs shu sia sib sic sid sie sig sih sii sio sis siu soa sob soc sod soe sog soh soi soo sos sou ss- ssa ssb ssc ssd sse ssg ssh ssi sso sss ssu sua sub suc sud sue sug suh sui suo sus suu ua- uaa uab uac uad uae uag uah uai uao uas uau uba ubb ubc ube ubg ubh ubi ubo ubs ubu uca ucb ucc ucd uce ucg uch uci uco ucs ucu uda udb udc udd ude udg udi udo uds udu uea ueb uec ued uee ueg ueh uei ues uga ugb ugc uge ugg ugh ugi ugo ugs ugu uha uhb uhc uhd uhe uhh uhi uho uhs uhu uia uib uic uid uie uig uii uio uis uiu uoa uob uoc uod uoe uog uoo uos usa usb usc usd use usg ush usi uso uss usu uua uuc uue uug uus uuu