c-- ccc ccf cck ccm cco ccr ccs ccu cfc cff cfk cfm cfo cfr cfs cfu ckc ckm cko cks cmc cmf cmk cmm cmo cmr cms cmu co- coc cof cok com coo cor cos cou crc crf crk crm cro crr crs cru csc csf csk csm cso csr css csu cuc cuf cuk cum cuo cur cus cuu fcc fcf fck fcm fco fcr fcs fcu ffc fff ffk ffm ffo ffr ffs ffu fkc fkf fkk fkm fmc fmf fmm fmo fmr fms fmu foc fof fok fom foo for fos fou frc frf frk frm fro frr frs fru fsc fsf fsk fsm fso fsr fss fsu fuf fuk fum fuo fur fus fuu kcc kck kcm kcr kcs kcu kfc kff kfm kfo kfs kfu kkc kkk kkm kkr kks kku kmc kmf kmk kmm kmo kms kmu koc kof kok kom koo kor kos kou krc krf krk kro krr krs kru ksc ksf ksk ksm kso ksr kss ksu kuc kuk kum kur kus kuu m-f m-o m-r mc- mcc mcf mck mcm mco mcr mcs mcu mfc mff mfm mfo mfr mfs mfu mkc mkk mkm mko mkr mks mku mmc mmf mmk mmm mmo mmr mms mmu moc mof mok mom moo mor mos mou mrc mrf mrk mrm mro mrr mrs mru msc msf msk msm mso msr mss msu muc muf muk mum mur mus muu oc- occ ocf ock ocm oco ocr ocs ocu of- ofc off ofm ofo ofr ofs ofu okc okk oko okr oks oku om- omc omf omm omo omr oms omu oo- ooc oof ook oom ooo oor oos or- orc orf ork orm oro orr ors oru os- osc osf osk osm oso osr oss osu ou- ouc ouf ouk oum ouo our ous rcc rcf rcm rco rcr rcs rcu rfc rff rfk rfm rfo rfr rfs rfu rkc rkf rkk rkm rko rks rku rmc rmf rmm rmo rmr rms roc rof rok rom roo ror ros rou rrc rrf rrk rrm rrr rrs rru rsc rsf rsk rsm rso rsr rss rsu ruc ruf ruk rum ruo rur rus ruu scc scf sck scm sco scr scs scu sfc sff sfk sfm sfo sfr sfs sfu sk- skc skf skk skm sko skr sks sku smc smf smk smm smo smr sms smu soc sof sok som soo sor sos sou sr- src srf srk srm sro srr srs ss- ssc ssf ssk ssm sso ssr sss ssu suc suf suk sum suo sur sus suu ucc ucf uck ucm uco ucr ucs ucu ufc uff ufm ufo ufr ufs ufu ukc ukf ukk ukr uku um- umc umf umm umo umr ums umu uoc uok uom uoo uor uos ur- urc urf urk urm uro urr urs uru usc usf usk usm uso usr uss usu uuc uum uur uus uuu