-ic a-a a-c a-i aaa aac aag aai aan aao aap aar aas ac- aca acc acg aci acn aco acp acr acs ag- aga agc agg agi agn ago agp agr ags ai- aia aic aig aii ain aio aip air ais an- ana anc ang ani ann ano anp anr ans aoa aoc aog aoi aon aoo aop aor aos ap- apa apc apg api apn apo app apr aps ar- ara arc arg ari arn aro arp arr ars as- asa asc asg asi asn aso asp asr ass c-- caa cac cag cai can cao cap car cas cca ccc ccg cci ccn cco ccp ccr ccs cga cgc cgg cgi cgn cgo cgp cgr cgs ci- cia cic cig cii cin cio cip cir cis cn- cna cnc cng cni cnn cno cnp cnr cns co- coa coc cog coi con coo cop cor cos cpa cpc cpg cpi cpn cpo cpp cpr cps cra crc crg cri crn cro crp crr crs csa csc csg csi csn cso csp csr css g-p gaa gac gag gai gan gao gap gar gas gca gcc gcg gci gcn gco gcp gcr gcs gga ggc ggg ggi ggn ggo ggp ggr ggs gia gic gig gii gin gio gip gir gis gna gnc gni gnn gno gnp gnr gns goa goc gog goi gon goo gop gor gos gpa gpc gpg gpi gpn gpo gpp gpr gps gra grc grg gri grn gro grp grr grs gsa gsc gsg gsi gsn gso gsp gsr gss ia- iaa iac iag iai ian iao iap iar ias ica icc icg ici icn ico icp icr ics iga igc igg igi ign igo igp igr igs iia iic iii iin iio iip iir iis in- ina inc ing ini inn ino inp inr ins io- ioa ioc iog ioi ion ioo iop ior ios ipa ipc ipg ipi ipn ipo ipp ipr ips ir- ira irc irg iri irn iro irp irr irs is- isa isc isg isi isn iso isp isr iss n-i naa nac nag nai nan nao nap nar nas nca ncc ncg nci ncn nco ncp ncr ncs nga ngc ngg ngi ngn ngo ngp ngs nia nic nig nii nin nio nip nir nis nna nnc nng nni nnn nno nnp nns no- noa noc nog noi non noo nop nor nos npa npc npg npi npn npo npp npr nps nra nrc nrg nri nrn nro nrp nrr nrs nsa nsc nsg nsi nsn nso nsp nsr nss o-i oaa oac oag oai oan oao oap oar oas oc- oca occ ocg oci ocn oco ocp ocr ocs oga ogc ogg ogi ogn ogo ogp ogs oia oic oii oin oio oip oir ois on- ona onc ong oni onn ono onp onr ons oo- ooa ooc oog ooi oon ooo oop oor oos op- opa opc opg opi opn opo opp opr ops or- ora orc org ori orn oro orp orr ors os- osa osc osg osi osn oso osp osr oss p-p paa pac pag pai pan pao pap par pas pca pcc pcg pci pcn pco pcp pcr pcs pga pgc pgg pgi pgn pgo pgp pgr pgs pia pic pig pii pin pio pip pir pis pn- pna pnc png pni pnn pno pnp pnr pns poa poc pog poi pon poo pop por pos ppa ppc ppg ppi ppn ppo ppp ppr pps pra prc prg pri prn pro prp prr prs ps- psa psc psg psi psn pso psp psr pss ra- raa rac rag rai ran rao rap rar ras rca rcc rcg rci rcn rco rcp rcr rcs rga rgc rgg rgi rgn rgo rgp rgr rgs ria ric rig rii rin rio rip rir ris rna rnc rng rni rnn rno rnp rnr rns roa roc rog roi ron roo rop ror ros rpa rpc rpg rpi rpn rpo rpp rpr rps rra rrc rrg rri rrn rrp rrr rrs rsa rsc rsg rsi rsn rso rsp rsr rss saa sac sag sai san sao sap sar sas sca scc scg sci scn sco scp scr scs sga sgc sgg sgi sgn sgo sgp sgr sgs sia sic sig sii sin sio sip sir sis sna snc sng sni snn sno snp snr sns soa soc sog soi son soo sop sor sos spa spc spg spi spn spo spp spr sps sr- sra src srg sri srn sro srp srr srs ss- ssa ssc ssg ssi ssn sso ssp ssr sss