-er -ic c-- ccc cce ccg cci ccn cco ccp ccr ce- cec cee ceg cei cen ceo cep cer cgc cge cgg cgi cgn cgo cgp cgr ci- cic cie cig cii cin cio cip cir cn- cnc cne cng cni cnn cno cnp cnr co- coc coe cog coi con coo cop cor cpc cpe cpg cpi cpn cpo cpp cpr crc cre crg cri crn cro crp crr ec- ecc ece ecg eci ecn eco ecr eec eee eeg een eeo eep eer egc ege egg egi egn ego egp egr eic eie eig eii ein eio eip eir en- enc ene eng eni enn eno enp enr eo- eoc eoe eog eoi eon eoo eop eor ep- epc epe epg epi epn epo epp epr erc ere erg eri ern ero erp err g-p gcc gce gcg gci gcn gco gcp gcr ge- gec gee geg gei gen geo gep ger ggc ggg ggi ggn ggo ggp ggr gic gie gig gii gin gio gip gir gnc gne gni gnn gno gnp gnr goc goe gog goi gon goo gop gor gpc gpe gpg gpi gpn gpo gpp gpr grc gre grg gri grn gro grp grr icc ice icg ici icn ico icp icr ie- iec iee ieg iei ien iep ier igc ige igg igi ign igo igp igr iic iie iii iin iio iip iir in- inc ine ing ini inn ino inp inr io- ioc ioe iog ioi ion ioo iop ior ipc ipe ipg ipi ipn ipo ipp ipr ir- irc ire irg iri irn iro irp irr n-i ncc nce ncg nci ncn nco ncp ncr ne- nec nee neg nei nen neo nep ner ngc nge ngg ngi ngn ngo ngp nic nie nig nii nin nio nip nir nnc nne nng nni nnn nno nnp no- noc noe nog noi non noo nop nor npc npe npg npi npn npo npp npr nrc nre nrg nri nrn nro nrp nrr o-i oc- occ ocg oci ocn oco ocp ocr oec oee oeg oei oen oeo oep oer ogc oge ogg ogi ogn ogo ogp oic oie oii oin oio oip oir on- onc one ong oni onn ono onp onr oo- ooc oog ooi oon ooo oop oor op- opc ope opg opi opn opo opp opr or- orc ore org ori orn oro orp orr p-p pcc pce pcg pci pcn pco pcp pcr pec pee peg pei pen peo pep per pgc pge pgg pgi pgn pgo pgp pgr pic pie pig pii pin pio pip pir pn- pnc pne png pni pnn pno pnp pnr poc poe pog poi pon poo pop por ppc ppe ppg ppi ppn ppo ppp ppr prc pre prg pri prn pro prp prr rcc rce rcg rci rcn rco rcp rcr re- rec ree reg rei ren reo rep rer rgc rge rgg rgi rgn rgo rgp rgr ric rie rig rii rin rio rip rir rnc rng rni rnn rno rnp rnr roc roe rog roi ron roo rop ror rpc rpe rpg rpi rpn rpo rpp rpr rrc rrg rri rrn rrp rrr