c-- ccc ccm cco ccs ccu cmc cmm cmo cms cmu co- coc com coo cos cou csc csm cso css csu cuc cum cuo cus cuu m-o mc- mcc mcm mco mcs mcu mmc mmm mmo mms mmu moc mom moo mos mou msc msm mso mss msu muc mum mus muu oc- occ ocm oco ocs ocu om- omc omm omo oms omu oo- ooc oom ooo oos os- osc osm oso oss osu ou- ouc oum ouo ous scc scm sco scs scu smc smm smo sms smu soc som soo sos sou ss- ssc ssm sso sss ssu suc sum suo sus suu ucc ucm uco ucs ucu um- umc umm umo ums umu uoc uom uoo uos usc usm uso uss usu uuc uum uus uuu