obu oc- oca ocb occ ocd ocg och oci ocm oco ocr ocu oda odb odc odd odg odh odi odm odo odr odu oga ogc ogd ogg ogh ogi ogo oha ohc ohd ohg ohh ohi ohm oho ohr ohu oia oib oic oid oii oim oio oir oiu om- oma omb omc omd omg omh omi omm omo omr omu oo- ooa oob ooc ood oog ooh ooi oom ooo oor or- ora orb orc ord org orh ori orm oro orr oru ou- oua ouc oud ouh oui oum ouo our ra- raa rab rac rad rag rah rai ram rao rar rau rba rbb rbc rbd rbg rbh rbi rbm rbo rbr rbu rca rcb rcc rcd rcg rch rci rcm rco rcr rcu rda rdb rdc rdd rdg rdh rdi rdm rdo rdr rdu rga rgb rgc rgd rgg rgh rgi rgo rgr rh- rha rhb rhc rhd rhg rhh rhi rhm rho rhr rhu ria rib ric rid rig rih rii rim rio rir rma rmb rmc rmd rmg rmh rmi rmm rmo rmr roa rob roc rod rog roh roi rom roo ror rou rra rrb rrc rrd rrg rrh rri rrm rrr rru rua rub ruc rud rug ruh rui rum ruo rur ruu ua- uaa uab uac uad uag uah uai uam uao uar uau uba ubb ubc ubg ubh ubi ubo ubr ubu uca ucb ucc ucd ucg uch uci ucm uco ucr ucu uda udb udc udd udg udi udm udo udr udu uga ugb ugc ugg ugh ugi ugm ugo ugr ugu uha uhb uhc uhd uhh uhi uhm uho uhr uhu uia uib uic uid uig uii uim uio uir uiu um- uma umb umc umd umg umh umi umm umo umr umu uoa uob uoc uod uog uom uoo uor ur- ura urb urc urd urg uri urm uro urr uru uua uuc uug uum uur uuu