sbt sdb sdd sde sdg sdi sdj sdn sdo sdr sds sdt se- seb sed see seg sei sej sen seo ser ses set sgb sgd sge sgg sgi sgn sgo sgr sgs sgt sib sid sie sig sii sij sin sio sir sis sit sjb sjd sje sji sjj sjr sjs sjt snb snd sne sng sni snj snn sno snr sns snt sob sod soe sog soi soj son soo sor sos sot sr- srb srd sre srg sri srj srn sro srr srs srt ss- ssb ssd sse ssg ssi ssj ssn sso ssr sss sst stb std ste stg sti stj stn sto str sts stt tbb tbd tbe tbg tbi tbj tbn tbo tbr tbs tbt tdb tdd tde tdg tdi tdn tdo tdr tds tdt te- teb ted tee teg tei tej ten teo ter tes tet tgb tge tgg tgi tgn tgo tgr tgs tgt tib tid tie tig tii tin tio tir tis tit tjd tje tji tjo tjr tjs tnb tnd tne tng tni tnn tno tnr tns tnt to- tob tod toe tog toi toj ton too tor tos tot trb trd tre trg tri trn tro trr trs trt tsb tsd tse tsg tsi tsj tsn tso tsr tss tst ttb ttd tte ttg tti ttn tto ttr tts ttt