-er -ic c-- ccc cce ccf ccg cci ccr ccu ce- cec cee cef ceg cei cer ceu cfc cfe cff cfg cfi cfr cfu cgc cge cgg cgi cgr cgu ci- cic cie cif cig cii cir ciu crc cre crf crg cri crr cru cuc cue cuf cug cui cur cuu ec- ecc ece ecf ecg eci ecr ecu eec eee eef eeg eer ef- efc efe eff efg efi efr egc ege egf egg egi egr egu eic eie eif eig eii eir eiu erc ere erf erg eri err eru eu- euc eue euf eug eui eur fcc fce fcf fcg fci fcr fcu fec fee fef feg fei fer feu ffc ffe fff ffg ffi ffr ffu fgc fge fgf fgg fgi fgr fic fie fif fig fii fir fiu frc fre frf frg fri frr fru fue fuf fug fui fur fuu gcc gce gcf gcg gci gcr gcu ge- gec gee gef geg gei ger geu gfc gfe gff gfi gfr ggc ggg ggi ggr ggu gic gie gif gig gii gir giu grc gre grf grg gri grr gru gu- guc gue guf gug gui gur guu i-f icc ice icf icg ici icr icu ie- iec iee ief ieg iei ier ifc ife iff ifg ifi ifr ifu igc ige igf igg igi igr igu iic iie iif iii iir iiu ir- irc ire irf irg iri irr iru iu- iuc iue iug iui iur rcc rce rcf rcg rci rcr rcu re- rec ree ref reg rei rer reu rfc rfe rff rfg rfi rfr rfu rgc rge rgf rgg rgi rgr ric rie rif rig rii rir rrc rrf rrg rri rrr rru ruc rue ruf rug rui rur ruu ucc uce ucf ucg uci ucr ucu uec uee uef ueg uei uer ufc ufe uff ufg ufi ufr ufu ugc uge ugf ugg ugi ugr ugu uic uie uif uig uii uir uiu ur- urc ure urf urg uri urr uru uuc uue uug uur uuu