scp scr scs sct scu sga sgc sgg sgl sgn sgo sgp sgr sgs sgt sgu sla slc slg sll sln slo slp slr sls slt slu sna snc sng snl snn sno snp snr sns snt snu soa soc sog sol son soo sop sor sos sot sou spa spc spg spl spn spo spp spr sps spt spu sr- sra src srg srl srn sro srp srr srs srt ss- ssa ssc ssg ssl ssn sso ssp ssr sss sst ssu sta stc stg stl stn sto stp str sts stt stu sua suc sug sul sun suo sup sur sus sut suu taa tac tag tal tan tao tap tar tas tat tau tca tcc tcg tcl tcn tco tcp tcr tcs tct tcu tga tgc tgg tgl tgn tgo tgp tgr tgs tgt tgu tla tlc tlg tll tln tlo tlp tlr tls tlt tlu tna tnc tng tnl tnn tno tnp tnr tns tnt to- toa toc tog tol ton too top tor tos tot tou tpa tpc tpg tpl tpn tpo tpp tpr tps tpt tpu tra trc trg trl trn tro trp trr trs trt tru tsa tsc tsg tsl tsn tso tsp tsr tss tst tsu tta ttc ttg ttl ttn tto ttp ttr tts ttt ttu tua tuc tug tul tun tuo tup tur tus tut tuu ua- uaa uac uag ual uan uao uap uar uas uat uau uca ucc ucg ucl ucn uco ucp ucr ucs uct ucu uga ugc ugg ugl ugn ugo ugp ugr ugs ugt ugu ula ulc ulg ull uln ulo ulp ulr uls ult ulu un- una unc ung unl unn uno unp unr uns unt unu uoa uoc uog uol uon uoo uop uor uos uot up- upa upc upg upn upo upp upr ups upt upu ur- ura urc urg url urn uro urp urr urs urt uru usa usc usg usl usn uso usp usr uss ust usu uta utc utl utn uto utp utr uts utt utu uua uuc uug uun uur uus uut uuu