-ic a-a a-c a-i aaa aac aag aai aan aao aar aas ac- aca acc acg aci acn aco acr acs ag- aga agc agg agi agn ago agr ags ai- aia aic aig aii ain aio air ais an- ana anc ang ani ann ano anr ans aoa aoc aog aoi aon aoo aor aos ar- ara arc arg ari arn aro arr ars as- asa asc asg asi asn aso asr ass c-- caa cac cag cai can cao car cas cca ccc ccg cci ccn cco ccr ccs cga cgc cgg cgi cgn cgo cgr cgs ci- cia cic cig cii cin cio cir cis cn- cna cnc cng cni cnn cno cnr cns co- coa coc cog coi con coo cor cos cra crc crg cri crn cro crr crs csa csc csg csi csn cso csr css gaa gac gag gai gan gao gar gas gca gcc gcg gci gcn gco gcr gcs gga ggc ggg ggi ggn ggo ggr ggs gia gic gig gii gin gio gir gis gna gnc gni gnn gno gnr gns goa goc gog goi gon goo gor gos gra grc grg gri grn gro grr grs gsa gsc gsg gsi gsn gso gsr gss ia- iaa iac iag iai ian iao iar ias ica icc icg ici icn ico icr ics iga igc igg igi ign igo igr igs iia iic iii iin iio iir iis in- ina inc ing ini inn ino inr ins io- ioa ioc iog ioi ion ioo ior ios ir- ira irc irg iri irn iro irr irs is- isa isc isg isi isn iso isr iss n-i naa nac nag nai nan nao nar nas nca ncc ncg nci ncn nco ncr ncs nga ngc ngg ngi ngn ngo ngs nia nic nig nii nin nio nir nis nna nnc nng nni nnn nno nns no- noa noc nog noi non noo nor nos nra nrc nrg nri nrn nro nrr nrs nsa nsc nsg nsi nsn nso nsr nss o-i oaa oac oag oai oan oao oar oas oc- oca occ ocg oci ocn oco ocr ocs oga ogc ogg ogi ogn ogo ogs oia oic oii oin oio oir ois on- ona onc ong oni onn ono onr ons oo- ooa ooc oog ooi oon ooo oor oos or- ora orc org ori orn oro orr ors os- osa osc osg osi osn oso osr oss ra- raa rac rag rai ran rao rar ras rca rcc rcg rci rcn rco rcr rcs rga rgc rgg rgi rgn rgo rgr rgs ria ric rig rii rin rio rir ris rna rnc rng rni rnn rno rnr rns roa roc rog roi ron roo ror ros rra rrc rrg rri rrn rrr rrs rsa rsc rsg rsi rsn rso rsr rss saa sac sag sai san sao sar sas sca scc scg sci scn sco scr scs sga sgc sgg sgi sgn sgo sgr sgs sia sic sig sii sin sio sir sis sna snc sng sni snn sno snr sns soa soc sog soi son soo sor sos sr- sra src srg sri srn sro srr srs ss- ssa ssc ssg ssi ssn sso ssr sss