sgn sgo sgp sgr sgs sgt sgu sic sid sig sii sin sio sip sir sis sit siu snc snd sng sni snn sno snp snr sns snt snu soc sod sog soi son soo sop sor sos sot sou spc spd spg spi spn spo spp spr sps spt spu sr- src srd srg sri srn sro srp srr srs srt ss- ssc ssd ssg ssi ssn sso ssp ssr sss sst ssu stc std stg sti stn sto stp str sts stt stu suc sud sug sui sun suo sup sur sus sut suu tcc tcd tcg tci tcn tco tcp tcr tcs tct tcu tdc tdd tdg tdi tdn tdo tdp tdr tds tdt tdu tgc tgg tgi tgn tgo tgp tgr tgs tgt tgu tic tid tig tii tin tio tip tir tis tit tiu tnc tnd tng tni tnn tno tnp tnr tns tnt to- toc tod tog toi ton too top tor tos tot tou tpc tpd tpg tpi tpn tpo tpp tpr tps tpt tpu trc trd trg tri trn tro trp trr trs trt tru tsc tsd tsg tsi tsn tso tsp tsr tss tst tsu ttc ttd ttg tti ttn tto ttp ttr tts ttt ttu tuc tud tug tui tun tuo tup tur tus tut tuu ucc ucd ucg uci ucn uco ucp ucr ucs uct ucu udc udd udg udi udn udo udp udr uds udt udu ugc ugg ugi ugn ugo ugp ugr ugs ugt ugu uic uid uig uii uin uio uip uir uis uit uiu un- unc und ung uni unn uno unp unr uns unt unu uoc uod uog uon uoo uop uor uos uot up- upc upd upg upi upn upo upp upr ups upt upu ur- urc urd urg uri urn uro urp urr urs urt uru usc usd usg usi usn uso usp usr uss ust usu utc utd uti utn uto utp utr uts utt utu uuc uug uun uur uus uut uuu