-er -ic c-- ccc cce ccf cci ccr cct ce- cec cee cef cei cer cet cfc cfe cff cfi cfr cft ci- cic cie cif cii cir cit crc cre crf cri crr crt ctc cte ctf cti ctr ctt ec- ecc ece ecf eci ecr ect eec eee eef eer eet ef- efc efe eff efi efr eft eic eie eif eii eir eit erc ere erf eri err ert etc ete etf eti etr ett fcc fce fcf fci fcr fct fec fee fef fei fer fet ffc ffe fff ffi ffr fft fic fie fif fii fir fit frc fre frf fri frr frt ftc fte ftf fti ftr ftt i-f icc ice icf ici icr ict ie- iec iee ief iei ier iet ifc ife iff ifi ifr ift iic iie iif iii iir iit ir- irc ire irf iri irr irt itc ite itf iti itt rcc rce rcf rci rcr rct re- rec ree ref rei rer ret rfc rfe rff rfi rfr rft ric rie rif rii rir rit rrc rrf rri rrr rrt rtc rte rtf rti rtr rtt tcc tce tcf tci tcr tct te- tec tee tef tei ter tet tfc tfe tff tfi tfr tft tic tie tif tii tir tit trc tre trf tri trr trt ttc tte ttf tti ttr ttt