-er -ic a-a a-c a-i aaa aac aae aag aai aan aao aap aar ac- aca acc ace acg aci acn aco acp acr aea aec aee aeg aei aen aeo aep aer ag- aga agc age agg agi agn ago agp agr ai- aia aic aie aig aii ain aio aip air an- ana anc ane ang ani ann ano anp anr aoa aoc aoe aog aoi aon aoo aop aor ap- apa apc ape apg api apn apo app apr ar- ara arc are arg ari arn aro arp arr c-- caa cac cae cag cai can cao cap car cca ccc cce ccg cci ccn cco ccp ccr ce- cea cec cee ceg cei cen ceo cep cer cga cgc cge cgg cgi cgn cgo cgp cgr ci- cia cic cie cig cii cin cio cip cir cn- cna cnc cne cng cni cnn cno cnp cnr co- coa coc coe cog coi con coo cop cor cpa cpc cpe cpg cpi cpn cpo cpp cpr cra crc cre crg cri crn cro crp crr eaa eac eae eag eai ean eao eap ear ec- eca ecc ece ecg eci ecn eco ecr eea eec eee eeg een eeo eep eer ega egc ege egg egi egn ego egp egr eia eic eie eig eii ein eio eip eir en- ena enc ene eng eni enn eno enp enr eo- eoa eoc eoe eog eoi eon eoo eop eor ep- epa epc epe epg epi epn epo epp epr era erc ere erg eri ern ero erp err g-p gaa gac gae gag gai gan gao gap gar gca gcc gce gcg gci gcn gco gcp gcr ge- gea gec gee geg gei gen geo gep ger gga ggc ggg ggi ggn ggo ggp ggr gia gic gie gig gii gin gio gip gir gna gnc gne gni gnn gno gnp gnr goa goc goe gog goi gon goo gop gor gpa gpc gpe gpg gpi gpn gpo gpp gpr gra grc gre grg gri grn gro grp grr ia- iaa iac iae iag iai ian iao iap iar ica icc ice icg ici icn ico icp icr ie- iea iec iee ieg iei ien iep ier iga igc ige igg igi ign igo igp igr iia iic iie iii iin iio iip iir in- ina inc ine ing ini inn ino inp inr io- ioa ioc ioe iog ioi ion ioo iop ior ipa ipc ipe ipg ipi ipn ipo ipp ipr ir- ira irc ire irg iri irn iro irp irr n-i naa nac nae nag nai nan nao nap nar nca ncc nce ncg nci ncn nco ncp ncr ne- nea nec nee neg nei nen neo nep ner nga ngc nge ngg ngi ngn ngo ngp nia nic nie nig nii nin nio nip nir nna nnc nne nng nni nnn nno nnp no- noa noc noe nog noi non noo nop nor npa npc npe npg npi npn npo npp npr nra nrc nre nrg nri nrn nro nrp nrr o-i oaa oac oae oag oai oan oao oap oar oc- oca occ ocg oci ocn oco ocp ocr oea oec oee oeg oei oen oeo oep oer oga ogc oge ogg ogi ogn ogo ogp oia oic oie oii oin oio oip oir on- ona onc one ong oni onn ono onp onr oo- ooa ooc oog ooi oon ooo oop oor op- opa opc ope opg opi opn opo opp opr or- ora orc ore org ori orn oro orp orr p-p paa pac pae pag pai pan pao pap par pca pcc pce pcg pci pcn pco pcp pcr pea pec pee peg pei pen peo pep per pga pgc pge pgg pgi pgn pgo pgp pgr pia pic pie pig pii pin pio pip pir pn- pna pnc pne png pni pnn pno pnp pnr poa poc poe pog poi pon poo pop por ppa ppc ppe ppg ppi ppn ppo ppp ppr pra prc pre prg pri prn pro prp prr ra- raa rac rae rag rai ran rao rap rar rca rcc rce rcg rci rcn rco rcp rcr re- rea rec ree reg rei ren reo rep rer rga rgc rge rgg rgi rgn rgo rgp rgr ria ric rie rig rii rin rio rip rir rna rnc rng rni rnn rno rnp rnr roa roc roe rog roi ron roo rop ror rpa rpc rpe rpg rpi rpn rpo rpp rpr rra rrc rrg rri rrn rrp rrr