-er c-- ccc cce ccf ccg ccm ccr ccu ce- cec cee cef ceg cem cer ceu cfc cfe cff cfg cfm cfr cfu cgc cge cgg cgm cgr cgu cmc cme cmf cmg cmm cmr cmu crc cre crf crg crm crr cru cuc cue cuf cug cum cur cuu ec- ecc ece ecf ecg ecm ecr ecu eec eee eef eeg eem eer ef- efc efe eff efg efm efr egc ege egf egg egm egr egu em- emc eme emf emg emm emr emu erc ere erf erg erm err eru eu- euc eue euf eug eur fcc fce fcf fcg fcm fcr fcu fec fee fef feg fem fer feu ffc ffe fff ffg ffm ffr ffu fgc fge fgf fgg fgm fgr fmc fme fmf fmg fmm fmr fmu frc fre frf frg frm frr fru fue fuf fug fum fur fuu gcc gce gcf gcg gcm gcr gcu ge- gec gee gef geg gem ger geu gfc gfe gff gfm gfr ggc ggg ggm ggr ggu gmc gme gmf gmg gmm gmr grc gre grf grg grm grr gru gu- guc gue guf gug gum gur guu m-f m-r mc- mcc mce mcf mcg mcm mcr mcu mec mee mef meg mem mer meu mfc mfe mff mfg mfm mfr mfu mgc mge mgf mgm mgr mgu mmc mme mmf mmg mmm mmr mmu mrc mre mrf mrg mrm mrr mru muc mue muf mug mum mur muu rcc rce rcf rcg rcm rcr rcu re- rec ree ref reg rem rer reu rfc rfe rff rfg rfm rfr rfu rgc rge rgf rgg rgr rmc rme rmf rmg rmm rmr rrc rrf rrg rrm rrr rru ruc rue ruf rug rum rur ruu ucc uce ucf ucg ucm ucr ucu uec uee uef ueg uem uer ufc ufe uff ufg ufm ufr ufu ugc uge ugf ugg ugm ugr ugu um- umc ume umf umg umm umr umu ur- urc ure urf urg urm urr uru uuc uue uug uum uur uuu