-er -ic c-- ccc cce ccf ccg cci ccn ccp ccr cct ce- cec cee cef ceg cei cen cep cer cet cfc cfe cff cfg cfi cfn cfp cfr cft cgc cge cgg cgi cgn cgp cgr cgt ci- cic cie cif cig cii cin cip cir cit cn- cnc cne cnf cng cni cnn cnp cnr cnt cpc cpe cpf cpg cpi cpn cpp cpr cpt crc cre crf crg cri crn crp crr crt ctc cte ctf ctg cti ctn ctp ctr ctt ec- ecc ece ecf ecg eci ecn ecr ect eec eee eef eeg een eep eer eet ef- efc efe eff efg efi efp efr eft egc ege egf egg egi egn egp egr egt eic eie eif eig eii ein eip eir eit en- enc ene enf eng eni enn enp enr ent ep- epc epe epf epg epi epn epp epr ept erc ere erf erg eri ern erp err ert etc ete etf etg eti etn etp etr ett fcc fce fcf fcg fci fcn fcp fcr fct fec fee fef feg fei fen fep fer fet ffc ffe fff ffg ffi ffn ffp ffr fft fgc fge fgf fgg fgi fgn fgp fgr fgt fic fie fif fig fii fin fip fir fit fnc fne fnf fng fni fnn fnp fnr fnt fpc fpe fpg fpi fpn fpp fpr fpt frc fre frf frg fri frn frp frr frt ftc fte ftf ftg fti ftn ftp ftr ftt g-p gcc gce gcf gcg gci gcn gcp gcr gct ge- gec gee gef geg gei gen gep ger get gfc gfe gff gfi gfp gfr gft ggc ggg ggi ggn ggp ggr ggt gic gie gif gig gii gin gip gir git gnc gne gnf gni gnn gnp gnr gnt gpc gpe gpf gpg gpi gpn gpp gpr gpt grc gre grf grg gri grn grp grr grt gtc gte gtf gtg gti gtn gtp gtr gtt i-f icc ice icf icg ici icn icp icr ict ie- iec iee ief ieg iei ien iep ier iet ifc ife iff ifg ifi ifn ifp ifr ift igc ige igf igg igi ign igp igr igt iic iie iif iii iin iip iir iit in- inc ine inf ing ini inn inp inr int ipc ipe ipf ipg ipi ipn ipp ipr ipt ir- irc ire irf irg iri irn irp irr irt itc ite itf itg iti itn itp itt n-i ncc nce ncf ncg nci ncn ncp ncr nct ne- nec nee nef neg nei nen nep ner net nfc nfe nff nfi nfn nfp nfr nft ngc nge ngf ngg ngi ngn ngp ngt nic nie nif nig nii nin nip nir nit nnc nne nnf nng nni nnn nnp nnt npc npe npf npg npi npn npp npr npt nrc nre nrf nrg nri nrn nrp nrr nrt ntc nte ntf ntg nti ntn ntp ntr ntt p-p pcc pce pcf pcg pci pcn pcp pcr pct pec pee pef peg pei pen pep per pet pfc pfe pff pfg pfi pfn pfp pfr pft pgc pge pgf pgg pgi pgn pgp pgr pgt pic pie pif pig pii pin pip pir pit pn- pnc pne pnf png pni pnn pnp pnr pnt ppc ppe ppf ppg ppi ppn ppp ppr ppt prc pre prf prg pri prn prp prr prt pt- ptc pte ptf ptg pti ptn ptp ptr ptt rcc rce rcf rcg rci rcn rcp rcr rct re- rec ree ref reg rei ren rep rer ret rfc rfe rff rfg rfi rfn rfp rfr rft rgc rge rgf rgg rgi rgn rgp rgr rgt ric rie rif rig rii rin rip rir rit rnc rng rni rnn rnp rnr rnt rpc rpe rpf rpg rpi rpn rpp rpr rpt rrc rrf rrg rri rrn rrp rrr rrt rtc rte rtf rtg rti rtn rtp rtr rtt tcc tce tcf tcg tci tcn tcp tcr tct te- tec tee tef teg tei ten tep ter tet tfc tfe tff tfg tfi tfn tfp tfr tft tgc tge tgf tgg tgi tgn tgp tgr tgt tic tie tif tig tii tin tip tir tit tnc tne tnf tng tni tnn tnp tnr tnt tpc tpe tpf tpg tpi tpn tpp tpr tpt trc tre trf trg tri trn trp trr trt ttc tte ttf ttg tti ttn ttp ttr ttt