-ic a-a a-c a-i aaa aac aag aai aak aan aar aas ac- aca acc acg aci ack acn acr acs ag- aga agc agg agi agk agn agr ags ai- aia aic aig aii aik ain air ais aka akc akg aki akk akn akr aks an- ana anc ang ani ank ann anr ans ar- ara arc arg ari ark arn arr ars as- asa asc asg asi ask asn asr ass c-- caa cac cag cai cak can car cas cca ccc ccg cci cck ccn ccr ccs cga cgc cgg cgi cgn cgr cgs ci- cia cic cig cii cik cin cir cis cka ckc cki cks cn- cna cnc cng cni cnn cnr cns cra crc crg cri crk crn crr crs csa csc csg csi csk csn csr css gaa gac gag gai gak gan gar gas gca gcc gcg gci gck gcn gcr gcs gga ggc ggg ggi ggn ggr ggs gia gic gig gii gik gin gir gis gka gkn gks gna gnc gni gnn gnr gns gra grc grg gri grk grn grr grs gsa gsc gsg gsi gsk gsn gsr gss ia- iaa iac iag iai ian iar ias ica icc icg ici ick icn icr ics iga igc igg igi igk ign igr igs iia iic iii iin iir iis ika ikc iki ikk ikr iks in- ina inc ing ini ink inn inr ins ir- ira irc irg iri irk irn irr irs is- isa isc isg isi isk isn isr iss ka- kaa kac kag kai kak kan kar kas kca kcc kcg kci kck kcn kcr kcs kga kgc kgi kgs kia kic kig kii kik kin kir kis kkc kki kkk kkn kkr kks kn- kna knc kng kni knk knn knr kra krc krg kri krk krn krr krs ksa ksc ksg ksi ksk ksn ksr kss n-i naa nac nag nai nak nan nar nas nca ncc ncg nci nck ncn ncr ncs nga ngc ngg ngi ngk ngn ngs nia nic nig nii nik nin nir nis nka nkc nki nkk nkn nkr nks nna nnc nng nni nnk nnn nns nra nrc nrg nri nrk nrn nrr nrs nsa nsc nsg nsi nsk nsn nsr nss ra- raa rac rag rai rak ran rar ras rca rcc rcg rci rcn rcr rcs rga rgc rgg rgi rgk rgn rgr rgs ria ric rig rii rik rin rir ris rkc rkg rkk rks rna rnc rng rni rnn rnr rns rra rrc rrg rri rrk rrn rrr rrs rsa rsc rsg rsi rsk rsn rsr rss saa sac sag sai sak san sar sas sca scc scg sci sck scn scr scs sga sgc sgg sgi sgk sgn sgr sgs sia sic sig sii sik sin sir sis sk- ska skc skg ski skk skr sks sna snc sng sni snk snn snr sns sr- sra src srg sri srk srn srr srs ss- ssa ssc ssg ssi ssk ssn ssr sss