c-- ccc ccf ccm cco ccs ccu cfc cff cfm cfo cfs cfu cmc cmf cmm cmo cms cmu co- coc cof com coo cos cou csc csf csm cso css csu cuc cuf cum cuo cus cuu fcc fcf fcm fco fcs fcu ffc fff ffm ffo ffs ffu fmc fmf fmm fmo fms fmu foc fof fom foo fos fou fsc fsf fsm fso fss fsu fuf fum fuo fus fuu m-f m-o mc- mcc mcf mcm mco mcs mcu mfc mff mfm mfo mfs mfu mmc mmf mmm mmo mms mmu moc mof mom moo mos mou msc msf msm mso mss msu muc muf mum mus muu oc- occ ocf ocm oco ocs ocu of- ofc off ofm ofo ofs ofu om- omc omf omm omo oms omu oo- ooc oof oom ooo oos os- osc osf osm oso oss osu ou- ouc ouf oum ouo ous scc scf scm sco scs scu sfc sff sfm sfo sfs sfu smc smf smm smo sms smu soc sof som soo sos sou ss- ssc ssf ssm sso sss ssu suc suf sum suo sus suu ucc ucf ucm uco ucs ucu ufc uff ufm ufo ufs ufu um- umc umf umm umo ums umu uoc uom uoo uos usc usf usm uso uss usu uuc uum uus uuu