-al -ol a-a a-c aaa aac aag aal aan aao aar aas ac- aca acc acg acl acn aco acr acs ag- aga agc agg agl agn ago agr ags al- ala alc alg all aln alo alr als an- ana anc ang anl ann ano anr ans aoa aoc aog aol aon aoo aor aos ar- ara arc arg arl arn aro arr ars as- asa asc asg asl asn aso asr ass c-- caa cac cag cal can cao car cas cca ccc ccg ccl ccn cco ccr ccs cga cgc cgg cgl cgn cgo cgr cgs cl- cla clc clg cll cln clo clr cls cn- cna cnc cng cnl cnn cno cnr cns co- coa coc cog col con coo cor cos cra crc crg crl crn cro crr crs csa csc csg csl csn cso csr css gaa gac gag gal gan gao gar gas gca gcc gcg gcl gcn gco gcr gcs gga ggc ggg ggn ggo ggr ggs gla glc glg gll gln glo glr gls gna gnc gnl gnn gno gnr gns goa goc gog gol gon goo gor gos gra grc grg grl grn gro grr grs gsa gsc gsg gsl gsn gso gsr gss la- laa lac lag lal lan lao lar las lca lcc lcg lcl lcn lco lcr lcs lga lgc lgg lgl lgn lgo lgr lgs lla llc llg lll lln llo llr lls lna lnc lng lnl lnn lno lnr lns loa loc log lol lon loo lor los lra lrc lrg lrn lro lrr lrs lsa lsc lsg lsl lsn lso lsr lss naa nac nag nal nan nao nar nas nca ncc ncg ncl ncn nco ncr ncs nga ngc ngg ngl ngn ngo ngs nla nlc nlg nll nln nlo nlr nls nna nnc nng nnl nnn nno nns no- noa noc nog nol non noo nor nos nra nrc nrg nrl nrn nro nrr nrs nsa nsc nsg nsl nsn nso nsr nss oaa oac oag oal oan oao oar oas oc- oca occ ocg ocl ocn oco ocr ocs oga ogc ogg ogl ogn ogo ogs ola olc olg oll oln olo ols on- ona onc ong onl onn ono onr ons oo- ooa ooc oog ool oon ooo oor oos or- ora orc org orl orn oro orr ors os- osa osc osg osl osn oso osr oss ra- raa rac rag ral ran rao rar ras rca rcc rcg rcl rcn rco rcr rcs rga rgc rgg rgn rgo rgr rgs rla rlc rlg rll rln rlo rlr rls rna rnc rng rnn rno rnr rns roa roc rog rol ron roo ror ros rra rrc rrg rrl rrn rrr rrs rsa rsc rsg rsl rsn rso rsr rss saa sac sag sal san sao sar sas sca scc scg scl scn sco scr scs sga sgc sgg sgl sgn sgo sgr sgs sla slc slg sll sln slo slr sls sna snc sng snl snn sno snr sns soa soc sog sol son soo sor sos sr- sra src srg srl srn sro srr srs ss- ssa ssc ssg ssl ssn sso ssr sss