-ic a-a a-c a-i aaa aac aag aai aao aar aas aau ac- aca acc acg aci aco acr acs acu ag- aga agc agg agi ago agr ags agu ai- aia aic aig aii aio air ais aiu aoa aoc aog aoi aoo aor aos aou ar- ara arc arg ari aro arr ars aru as- asa asc asg asi aso asr ass asu au- aua auc aug aui auo aur aus c-- caa cac cag cai cao car cas cau cca ccc ccg cci cco ccr ccs ccu cga cgc cgg cgi cgo cgr cgs cgu ci- cia cic cig cii cio cir cis ciu co- coa coc cog coi coo cor cos cou cra crc crg cri cro crr crs cru csa csc csg csi cso csr css csu cua cuc cug cui cuo cur cus cuu gaa gac gag gai gao gar gas gau gca gcc gcg gci gco gcr gcs gcu gga ggc ggg ggi ggo ggr ggs ggu gia gic gig gii gio gir gis giu goa goc gog goi goo gor gos gou gra grc grg gri gro grr grs gru gsa gsc gsg gsi gso gsr gss gsu gu- gua guc gug gui guo gur gus guu ia- iaa iac iag iai iao iar ias iau ica icc icg ici ico icr ics icu iga igc igg igi igo igr igs igu iia iic iii iio iir iis iiu io- ioa ioc iog ioi ioo ior ios iou ir- ira irc irg iri iro irr irs iru is- isa isc isg isi iso isr iss isu iu- iua iuc iug iui iur ius o-i oaa oac oag oai oao oar oas oau oc- oca occ ocg oci oco ocr ocs ocu oga ogc ogg ogi ogo ogs oia oic oii oio oir ois oiu oo- ooa ooc oog ooi ooo oor oos or- ora orc org ori oro orr ors oru os- osa osc osg osi oso osr oss osu ou- oua ouc oui ouo our ous ra- raa rac rag rai rao rar ras rau rca rcc rcg rci rco rcr rcs rcu rga rgc rgg rgi rgo rgr rgs ria ric rig rii rio rir ris roa roc rog roi roo ror ros rou rra rrc rrg rri rrr rrs rru rsa rsc rsg rsi rso rsr rss rsu rua ruc rug rui ruo rur rus ruu saa sac sag sai sao sar sas sau sca scc scg sci sco scr scs scu sga sgc sgg sgi sgo sgr sgs sgu sia sic sig sii sio sir sis siu soa soc sog soi soo sor sos sou sr- sra src srg sri sro srr srs ss- ssa ssc ssg ssi sso ssr sss ssu sua suc sug sui suo sur sus suu ua- uaa uac uag uai uao uar uas uau uca ucc ucg uci uco ucr ucs ucu uga ugc ugg ugi ugo ugr ugs ugu uia uic uig uii uio uir uis uiu uoa uoc uog uoo uor uos ur- ura urc urg uri uro urr urs uru usa usc usg usi uso usr uss usu uua uuc uug uur uus uuu