rrl rrn rrr rrs rsa rsb rse rsg rsi rsl rsn rso rsr rss rza rzb rze rzo saa sab sae sag sai sal san sao sar sas saz sba sbb sbe sbg sbi sbl sbn sbo sbr sbs se- sea seb see seg sei sel sen seo ser ses sez sga sgb sge sgg sgi sgl sgn sgo sgr sgs sia sib sie sig sii sil sin sio sir sis sla slb sle slg sli sll sln slo slr sls sna snb sne sng sni snl snn sno snr sns soa sob soe sog soi sol son soo sor sos soz sr- sra srb sre srg sri srl srn sro srr srs ss- ssa ssb sse ssg ssi ssl ssn sso ssr sss ssz sza sze szi szl szr z-g zaa zab zag zai zan zao zar zas zaz zbb zbl zbr zbs zea zeb zee zel zen zeo zer zes zez zgb zgg zgi zgs zia zib zie zig zil zin zio zir zis ziz zla zlr zne znn zno zns zo- zoa zob zoe zog zoi zol zon zoo zor zos zrl zro zrs zsa zse zsg zsi zsl zsz zzr zzs zzz