-er -ic a-a a-c a-i a-t aaa aac aae aag aai aan aao aap aar aat ac- aca acc ace acg aci acn aco acp acr act aea aec aee aeg aei aen aeo aep aer aet ag- aga agc age agg agi agn ago agp agr agt ai- aia aic aie aig aii ain aio aip air ait an- ana anc ane ang ani ann ano anp anr ant aoa aoc aoe aog aoi aon aoo aop aor aot ap- apa apc ape apg api apn apo app apr apt ar- ara arc are arg ari arn aro arp arr art at- ata atc ate atg ati atn ato atp atr att c-- caa cac cae cag cai can cao cap car cat cca ccc cce ccg cci ccn cco ccp ccr cct ce- cea cec cee ceg cei cen ceo cep cer cet cga cgc cge cgg cgi cgn cgo cgp cgr cgt ci- cia cic cie cig cii cin cio cip cir cit cn- cna cnc cne cng cni cnn cno cnp cnr cnt co- coa coc coe cog coi con coo cop cor cot cpa cpc cpe cpg cpi cpn cpo cpp cpr cpt cra crc cre crg cri crn cro crp crr crt cta ctc cte ctg cti ctn cto ctp ctr ctt eaa eac eae eag eai ean eao eap ear eat ec- eca ecc ece ecg eci ecn eco ecr ect eea eec eee eeg een eeo eep eer eet ega egc ege egg egi egn ego egp egr egt eia eic eie eig eii ein eio eip eir eit en- ena enc ene eng eni enn eno enp enr ent eo- eoa eoc eoe eog eoi eon eoo eop eor eot ep- epa epc epe epg epi epn epo epp epr ept era erc ere erg eri ern ero erp err ert eta etc ete etg eti etn eto etp etr ett g-p gaa gac gae gag gai gan gao gap gar gat gca gcc gce gcg gci gcn gco gcp gcr gct ge- gea gec gee geg gei gen geo gep ger get gga ggc ggg ggi ggn ggo ggp ggr ggt gia gic gie gig gii gin gio gip gir git gna gnc gne gni gnn gno gnp gnr gnt goa goc goe gog goi gon goo gop gor got gpa gpc gpe gpg gpi gpn gpo gpp gpr gpt gra grc gre grg gri grn gro grp grr grt gta gtc gte gtg gti gtn gto gtp gtr gtt ia- iaa iac iae iag iai ian iao iap iar iat ica icc ice icg ici icn ico icp icr ict ie- iea iec iee ieg iei ien iep ier iet iga igc ige igg igi ign igo igp igr igt iia iic iie iii iin iio iip iir iit in- ina inc ine ing ini inn ino inp inr int io- ioa ioc ioe iog ioi ion ioo iop ior iot ipa ipc ipe ipg ipi ipn ipo ipp ipr ipt ir- ira irc ire irg iri irn iro irp irr irt ita itc ite itg iti itn ito itp itt n-i naa nac nae nag nai nan nao nap nar nat nca ncc nce ncg nci ncn nco ncp ncr nct ne- nea nec nee neg nei nen neo nep ner net nga ngc nge ngg ngi ngn ngo ngp ngt nia nic nie nig nii nin nio nip nir nit nna nnc nne nng nni nnn nno nnp nnt no- noa noc noe nog noi non noo nop nor not npa npc npe npg npi npn npo npp npr npt nra nrc nre nrg nri nrn nro nrp nrr nrt nta ntc nte ntg nti ntn nto ntp ntr ntt o-i oaa oac oae oag oai oan oao oap oar oat oc- oca occ ocg oci ocn oco ocp ocr oct oea oec oee oeg oei oen oeo oep oer oet oga ogc oge ogg ogi ogn ogo ogp ogt oia oic oie oii oin oio oip oir oit on- ona onc one ong oni onn ono onp onr ont oo- ooa ooc oog ooi oon ooo oop oor oot op- opa opc ope opg opi opn opo opp opr opt or- ora orc ore org ori orn oro orp orr ort ot- ota otc ote otg oti otn oto otp otr ott p-p paa pac pae pag pai pan pao pap par pat pca pcc pce pcg pci pcn pco pcp pcr pct pea pec pee peg pei pen peo pep per pet pga pgc pge pgg pgi pgn pgo pgp pgr pgt pia pic pie pig pii pin pio pip pir pit pn- pna pnc pne png pni pnn pno pnp pnr pnt poa poc poe pog poi pon poo pop por pot ppa ppc ppe ppg ppi ppn ppo ppp ppr ppt pra prc pre prg pri prn pro prp prr prt pt- pta ptc pte ptg pti ptn pto ptp ptr ptt ra- raa rac rae rag rai ran rao rap rar rat rca rcc rce rcg rci rcn rco rcp rcr rct re- rea rec ree reg rei ren reo rep rer ret rga rgc rge rgg rgi rgn rgo rgp rgr rgt ria ric rie rig rii rin rio rip rir rit rna rnc rng rni rnn rno rnp rnr rnt roa roc roe rog roi ron roo rop ror rot rpa rpc rpe rpg rpi rpn rpo rpp rpr rpt rra rrc rrg rri rrn rrp rrr rrt rta rtc rte rtg rti rtn rto rtp rtr rtt taa tac tae tag tai tan tao tap tar tat tca tcc tce tcg tci tcn tco tcp tcr tct te- tea tec tee teg tei ten teo tep ter tet tga tgc tge tgg tgi tgn tgo tgp tgr tgt tia tic tie tig tii tin tio tip tir tit tna tnc tne tng tni tnn tno tnp tnr tnt to- toa toc toe tog toi ton too top tor tot