-er -ic a-a a-c a-i aaa aac aae aaf aag aai aan aao aar ac- aca acc ace acf acg aci acn aco acr aea aec aee aef aeg aei aen aeo aer af- afa afc afe aff afg afi afn afo afr ag- aga agc age agf agg agi agn ago agr ai- aia aic aie aif aig aii ain aio air an- ana anc ane anf ang ani ann ano anr aoa aoc aoe aof aog aoi aon aoo aor ar- ara arc are arf arg ari arn aro arr c-- caa cac cae caf cag cai can cao car cca ccc cce ccf ccg cci ccn cco ccr ce- cea cec cee cef ceg cei cen ceo cer cfa cfc cfe cff cfg cfi cfn cfo cfr cga cgc cge cgg cgi cgn cgo cgr ci- cia cic cie cif cig cii cin cio cir cn- cna cnc cne cnf cng cni cnn cno cnr co- coa coc coe cof cog coi con coo cor cra crc cre crf crg cri crn cro crr eaa eac eae eaf eag eai ean eao ear ec- eca ecc ece ecf ecg eci ecn eco ecr eea eec eee eef eeg een eeo eer ef- efa efc efe eff efg efi efo efr ega egc ege egf egg egi egn ego egr eia eic eie eif eig eii ein eio eir en- ena enc ene enf eng eni enn eno enr eo- eoa eoc eoe eof eog eoi eon eoo eor era erc ere erf erg eri ern ero err faa fac fae faf fag fai fan fao far fca fcc fce fcf fcg fci fcn fco fcr fea fec fee fef feg fei fen feo fer ffa ffc ffe fff ffg ffi ffn ffo ffr fga fgc fge fgf fgg fgi fgn fgr fia fic fie fif fig fii fin fir fna fnc fne fnf fng fni fnn fnr foa foc foe fof fog foi fon foo for fra frc fre frf frg fri frn fro frr gaa gac gae gaf gag gai gan gao gar gca gcc gce gcf gcg gci gcn gco gcr ge- gea gec gee gef geg gei gen geo ger gfa gfc gfe gff gfi gfo gfr gga ggc ggg ggi ggn ggo ggr gia gic gie gif gig gii gin gio gir gna gnc gne gnf gni gnn gno gnr goa goc goe gof gog goi gon goo gor gra grc gre grf grg gri grn gro grr i-f ia- iaa iac iae iaf iag iai ian iao iar ica icc ice icf icg ici icn ico icr ie- iea iec iee ief ieg iei ien ier ifa ifc ife iff ifg ifi ifn ifo ifr iga igc ige igf igg igi ign igo igr iia iic iie iif iii iin iio iir in- ina inc ine inf ing ini inn ino inr io- ioa ioc ioe iof iog ioi ion ioo ior ir- ira irc ire irf irg iri irn iro irr n-i naa nac nae naf nag nai nan nao nar nca ncc nce ncf ncg nci ncn nco ncr ne- nea nec nee nef neg nei nen neo ner nfa nfc nfe nff nfi nfn nfo nfr nga ngc nge ngf ngg ngi ngn ngo nia nic nie nif nig nii nin nio nir nna nnc nne nnf nng nni nnn nno no- noa noc noe nof nog noi non noo nor nra nrc nre nrf nrg nri nrn nro nrr o-i oaa oac oae oaf oag oai oan oao oar oc- oca occ ocf ocg oci ocn oco ocr oea oec oee oef oeg oei oen oeo oer of- ofa ofc ofe off ofg ofi ofn ofo ofr oga ogc oge ogf ogg ogi ogn ogo oia oic oie oif oii oin oio oir on- ona onc one onf ong oni onn ono onr oo- ooa ooc oof oog ooi oon ooo oor or- ora orc ore orf org ori orn oro orr ra- raa rac rae raf rag rai ran rao rar rca rcc rce rcf rcg rci rcn rco rcr re- rea rec ree ref reg rei ren reo rer rfa rfc rfe rff rfg rfi rfn rfo rfr rga rgc rge rgf rgg rgi rgn rgo rgr ria ric rie rif rig rii rin rio rir rna rnc rng rni rnn rno rnr roa roc roe rof rog roi ron roo ror rra rrc rrf rrg rri rrn rrr