-ic a-a a-c a-i aaa aac aaf aag aai aan aar aas ac- aca acc acf acg aci acn acr acs af- afa afc aff afg afi afn afr afs ag- aga agc agf agg agi agn agr ags ai- aia aic aif aig aii ain air ais an- ana anc anf ang ani ann anr ans ar- ara arc arf arg ari arn arr ars as- asa asc asf asg asi asn asr ass c-- caa cac caf cag cai can car cas cca ccc ccf ccg cci ccn ccr ccs cfa cfc cff cfg cfi cfn cfr cfs cga cgc cgg cgi cgn cgr cgs ci- cia cic cif cig cii cin cir cis cn- cna cnc cnf cng cni cnn cnr cns cra crc crf crg cri crn crr crs csa csc csf csg csi csn csr css faa fac faf fag fai fan far fas fca fcc fcf fcg fci fcn fcr fcs ffa ffc fff ffg ffi ffn ffr ffs fga fgc fgf fgg fgi fgn fgr fgs fia fic fif fig fii fin fir fis fna fnc fnf fng fni fnn fnr fns fra frc frf frg fri frn frr frs fsa fsc fsf fsg fsi fsn fsr fss gaa gac gaf gag gai gan gar gas gca gcc gcf gcg gci gcn gcr gcs gfa gfc gff gfi gfr gfs gga ggc ggg ggi ggn ggr ggs gia gic gif gig gii gin gir gis gna gnc gnf gni gnn gnr gns gra grc grf grg gri grn grr grs gsa gsc gsf gsg gsi gsn gsr gss i-f ia- iaa iac iaf iag iai ian iar ias ica icc icf icg ici icn icr ics ifa ifc iff ifg ifi ifn ifr ifs iga igc igf igg igi ign igr igs iia iic iif iii iin iir iis in- ina inc inf ing ini inn inr ins ir- ira irc irf irg iri irn irr irs is- isa isc isf isg isi isn isr iss n-i naa nac naf nag nai nan nar nas nca ncc ncf ncg nci ncn ncr ncs nfa nfc nff nfi nfn nfr nfs nga ngc ngf ngg ngi ngn ngs nia nic nif nig nii nin nir nis nna nnc nnf nng nni nnn nns nra nrc nrf nrg nri nrn nrr nrs nsa nsc nsf nsg nsi nsn nsr nss ra- raa rac raf rag rai ran rar ras rca rcc rcf rcg rci rcn rcr rcs rfa rfc rff rfg rfi rfn rfr rfs rga rgc rgf rgg rgi rgn rgr rgs ria ric rif rig rii rin rir ris rna rnc rng rni rnn rnr rns rra rrc rrf rrg rri rrn rrr rrs rsa rsc rsf rsg rsi rsn rsr rss saa sac saf sag sai san sar sas sca scc scf scg sci scn scr scs sfa sfc sff sfg sfi sfn sfr sfs sga sgc sgf sgg sgi sgn sgr sgs sia sic sif sig sii sin sir sis sna snc snf sng sni snn snr sns sr- sra src srf srg sri srn srr srs ss- ssa ssc ssf ssg ssi ssn ssr sss