-er -ic c-- ccc cce ccf ccg cci ccn cco ccr cct ce- cec cee cef ceg cei cen ceo cer cet cfc cfe cff cfg cfi cfn cfo cfr cft cgc cge cgg cgi cgn cgo cgr cgt ci- cic cie cif cig cii cin cio cir cit cn- cnc cne cnf cng cni cnn cno cnr cnt co- coc coe cof cog coi con coo cor cot crc cre crf crg cri crn cro crr crt ctc cte ctf ctg cti ctn cto ctr ctt ec- ecc ece ecf ecg eci ecn eco ecr ect eec eee eef eeg een eeo eer eet ef- efc efe eff efg efi efo efr eft egc ege egf egg egi egn ego egr egt eic eie eif eig eii ein eio eir eit en- enc ene enf eng eni enn eno enr ent eo- eoc eoe eof eog eoi eon eoo eor eot erc ere erf erg eri ern ero err ert etc ete etf etg eti etn eto etr ett fcc fce fcf fcg fci fcn fco fcr fct fec fee fef feg fei fen feo fer fet ffc ffe fff ffg ffi ffn ffo ffr fft fgc fge fgf fgg fgi fgn fgr fgt fic fie fif fig fii fin fir fit fnc fne fnf fng fni fnn fnr fnt foc foe fof fog foi fon foo for fot frc fre frf frg fri frn fro frr frt ftc fte ftf ftg fti ftn fto ftr ftt gcc gce gcf gcg gci gcn gco gcr gct ge- gec gee gef geg gei gen geo ger get gfc gfe gff gfi gfo gfr gft ggc ggg ggi ggn ggo ggr ggt gic gie gif gig gii gin gio gir git gnc gne gnf gni gnn gno gnr gnt goc goe gof gog goi gon goo gor got grc gre grf grg gri grn gro grr grt gtc gte gtf gtg gti gtn gto gtr gtt i-f icc ice icf icg ici icn ico icr ict ie- iec iee ief ieg iei ien ier iet ifc ife iff ifg ifi ifn ifo ifr ift igc ige igf igg igi ign igo igr igt iic iie iif iii iin iio iir iit in- inc ine inf ing ini inn ino inr int io- ioc ioe iof iog ioi ion ioo ior iot ir- irc ire irf irg iri irn iro irr irt itc ite itf itg iti itn ito itt n-i ncc nce ncf ncg nci ncn nco ncr nct ne- nec nee nef neg nei nen neo ner net nfc nfe nff nfi nfn nfo nfr nft ngc nge ngf ngg ngi ngn ngo ngt nic nie nif nig nii nin nio nir nit nnc nne nnf nng nni nnn nno nnt no- noc noe nof nog noi non noo nor not nrc nre nrf nrg nri nrn nro nrr nrt ntc nte ntf ntg nti ntn nto ntr ntt o-i oc- occ ocf ocg oci ocn oco ocr oct oec oee oef oeg oei oen oeo oer oet of- ofc ofe off ofg ofi ofn ofo ofr oft ogc oge ogf ogg ogi ogn ogo ogt oic oie oif oii oin oio oir oit on- onc one onf ong oni onn ono onr ont oo- ooc oof oog ooi oon ooo oor oot or- orc ore orf org ori orn oro orr ort ot- otc ote otf otg oti otn oto otr ott rcc rce rcf rcg rci rcn rco rcr rct re- rec ree ref reg rei ren reo rer ret rfc rfe rff rfg rfi rfn rfo rfr rft rgc rge rgf rgg rgi rgn rgo rgr rgt ric rie rif rig rii rin rio rir rit rnc rng rni rnn rno rnr rnt roc roe rof rog roi ron roo ror rot rrc rrf rrg rri rrn rrr rrt rtc rte rtf rtg rti rtn rto rtr rtt tcc tce tcf tcg tci tcn tco tcr tct te- tec tee tef teg tei ten teo ter tet tfc tfe tff tfg tfi tfn tfo tfr tft tgc tge tgf tgg tgi tgn tgo tgr tgt tic tie tif tig tii tin tio tir tit tnc tne tnf tng tni tnn tno tnr tnt to- toc toe tof tog toi ton too tor tot trc tre trf trg tri trn tro trr trt ttc tte ttf ttg tti ttn tto ttr ttt