-er -ic c-- ccc cce ccg cci ccn cco ccp ccr cct ce- cec cee ceg cei cen ceo cep cer cet cgc cge cgg cgi cgn cgo cgp cgr cgt ci- cic cie cig cii cin cio cip cir cit cn- cnc cne cng cni cnn cno cnp cnr cnt co- coc coe cog coi con coo cop cor cot cpc cpe cpg cpi cpn cpo cpp cpr cpt crc cre crg cri crn cro crp crr crt ctc cte ctg cti ctn cto ctp ctr ctt ec- ecc ece ecg eci ecn eco ecr ect eec eee eeg een eeo eep eer eet egc ege egg egi egn ego egp egr egt eic eie eig eii ein eio eip eir eit en- enc ene eng eni enn eno enp enr ent eo- eoc eoe eog eoi eon eoo eop eor eot ep- epc epe epg epi epn epo epp epr ept erc ere erg eri ern ero erp err ert etc ete etg eti etn eto etp etr ett g-p gcc gce gcg gci gcn gco gcp gcr gct ge- gec gee geg gei gen geo gep ger get ggc ggg ggi ggn ggo ggp ggr ggt gic gie gig gii gin gio gip gir git gnc gne gni gnn gno gnp gnr gnt goc goe gog goi gon goo gop gor got gpc gpe gpg gpi gpn gpo gpp gpr gpt grc gre grg gri grn gro grp grr grt gtc gte gtg gti gtn gto gtp gtr gtt icc ice icg ici icn ico icp icr ict ie- iec iee ieg iei ien iep ier iet igc ige igg igi ign igo igp igr igt iic iie iii iin iio iip iir iit in- inc ine ing ini inn ino inp inr int io- ioc ioe iog ioi ion ioo iop ior iot ipc ipe ipg ipi ipn ipo ipp ipr ipt ir- irc ire irg iri irn iro irp irr irt itc ite itg iti itn ito itp itt n-i ncc nce ncg nci ncn nco ncp ncr nct ne- nec nee neg nei nen neo nep ner net ngc nge ngg ngi ngn ngo ngp ngt nic nie nig nii nin nio nip nir nit nnc nne nng nni nnn nno nnp nnt no- noc noe nog noi non noo nop nor not npc npe npg npi npn npo npp npr npt nrc nre nrg nri nrn nro nrp nrr nrt ntc nte ntg nti ntn nto ntp ntr ntt o-i oc- occ ocg oci ocn oco ocp ocr oct oec oee oeg oei oen oeo oep oer oet ogc oge ogg ogi ogn ogo ogp ogt oic oie oii oin oio oip oir oit on- onc one ong oni onn ono onp onr ont oo- ooc oog ooi oon ooo oop oor oot op- opc ope opg opi opn opo opp opr opt or- orc ore org ori orn oro orp orr ort ot- otc ote otg oti otn oto otp otr ott p-p pcc pce pcg pci pcn pco pcp pcr pct pec pee peg pei pen peo pep per pet pgc pge pgg pgi pgn pgo pgp pgr pgt pic pie pig pii pin pio pip pir pit pn- pnc pne png pni pnn pno pnp pnr pnt poc poe pog poi pon poo pop por pot ppc ppe ppg ppi ppn ppo ppp ppr ppt prc pre prg pri prn pro prp prr prt pt- ptc pte ptg pti ptn pto ptp ptr ptt rcc rce rcg rci rcn rco rcp rcr rct re- rec ree reg rei ren reo rep rer ret rgc rge rgg rgi rgn rgo rgp rgr rgt ric rie rig rii rin rio rip rir rit rnc rng rni rnn rno rnp rnr rnt roc roe rog roi ron roo rop ror rot rpc rpe rpg rpi rpn rpo rpp rpr rpt rrc rrg rri rrn rrp rrr rrt rtc rte rtg rti rtn rto rtp rtr rtt tcc tce tcg tci tcn tco tcp tcr tct te- tec tee teg tei ten teo tep ter tet tgc tge tgg tgi tgn tgo tgp tgr tgt tic tie tig tii tin tio tip tir tit tnc tne tng tni tnn tno tnp tnr tnt to- toc toe tog toi ton too top tor tot tpc tpe tpg tpi tpn tpo tpp tpr tpt trc tre trg tri trn tro trp trr trt ttc tte ttg tti ttn tto ttp ttr ttt