-er -ic c-- ccc cce ccf ccg cci ccn cco ccp ccr ce- cec cee cef ceg cei cen ceo cep cer cfc cfe cff cfg cfi cfn cfo cfp cfr cgc cge cgg cgi cgn cgo cgp cgr ci- cic cie cif cig cii cin cio cip cir cn- cnc cne cnf cng cni cnn cno cnp cnr co- coc coe cof cog coi con coo cop cor cpc cpe cpf cpg cpi cpn cpo cpp cpr crc cre crf crg cri crn cro crp crr ec- ecc ece ecf ecg eci ecn eco ecr eec eee eef eeg een eeo eep eer ef- efc efe eff efg efi efo efp efr egc ege egf egg egi egn ego egp egr eic eie eif eig eii ein eio eip eir en- enc ene enf eng eni enn eno enp enr eo- eoc eoe eof eog eoi eon eoo eop eor ep- epc epe epf epg epi epn epo epp epr erc ere erf erg eri ern ero erp err fcc fce fcf fcg fci fcn fco fcp fcr fec fee fef feg fei fen feo fep fer ffc ffe fff ffg ffi ffn ffo ffp ffr fgc fge fgf fgg fgi fgn fgp fgr fic fie fif fig fii fin fip fir fnc fne fnf fng fni fnn fnp fnr foc foe fof fog foi fon foo fop for fpc fpe fpg fpi fpn fpo fpp fpr frc fre frf frg fri frn fro frp frr g-p gcc gce gcf gcg gci gcn gco gcp gcr ge- gec gee gef geg gei gen geo gep ger gfc gfe gff gfi gfo gfp gfr ggc ggg ggi ggn ggo ggp ggr gic gie gif gig gii gin gio gip gir gnc gne gnf gni gnn gno gnp gnr goc goe gof gog goi gon goo gop gor gpc gpe gpf gpg gpi gpn gpo gpp gpr grc gre grf grg gri grn gro grp grr i-f icc ice icf icg ici icn ico icp icr ie- iec iee ief ieg iei ien iep ier ifc ife iff ifg ifi ifn ifo ifp ifr igc ige igf igg igi ign igo igp igr iic iie iif iii iin iio iip iir in- inc ine inf ing ini inn ino inp inr io- ioc ioe iof iog ioi ion ioo iop ior ipc ipe ipf ipg ipi ipn ipo ipp ipr ir- irc ire irf irg iri irn iro irp irr n-i ncc nce ncf ncg nci ncn nco ncp ncr ne- nec nee nef neg nei nen neo nep ner nfc nfe nff nfi nfn nfo nfp nfr ngc nge ngf ngg ngi ngn ngo ngp nic nie nif nig nii nin nio nip nir nnc nne nnf nng nni nnn nno nnp no- noc noe nof nog noi non noo nop nor npc npe npf npg npi npn npo npp npr nrc nre nrf nrg nri nrn nro nrp nrr o-i oc- occ ocf ocg oci ocn oco ocp ocr oec oee oef oeg oei oen oeo oep oer of- ofc ofe off ofg ofi ofn ofo ofp ofr ogc oge ogf ogg ogi ogn ogo ogp oic oie oif oii oin oio oip oir on- onc one onf ong oni onn ono onp onr oo- ooc oof oog ooi oon ooo oop oor op- opc ope opf opg opi opn opo opp opr or- orc ore orf org ori orn oro orp orr p-p pcc pce pcf pcg pci pcn pco pcp pcr pec pee pef peg pei pen peo pep per pfc pfe pff pfg pfi pfn pfo pfp pfr pgc pge pgf pgg pgi pgn pgo pgp pgr pic pie pif pig pii pin pio pip pir pn- pnc pne pnf png pni pnn pno pnp pnr poc poe pof pog poi pon poo pop por ppc ppe ppf ppg ppi ppn ppo ppp ppr prc pre prf prg pri prn pro prp prr rcc rce rcf rcg rci rcn rco rcp rcr re- rec ree ref reg rei ren reo rep rer rfc rfe rff rfg rfi rfn rfo rfp rfr rgc rge rgf rgg rgi rgn rgo rgp rgr ric rie rif rig rii rin rio rip rir rnc rng rni rnn rno rnp rnr roc roe rof rog roi ron roo rop ror rpc rpe rpf rpg rpi rpn rpo rpp rpr rrc rrf rrg rri rrn rrp rrr