sci sco scp scr scs sct scu se- sea sec see seg sei seo sep ser ses set seu sga sgc sge sgg sgi sgo sgp sgr sgs sgt sgu sia sic sie sig sii sio sip sir sis sit siu soa soc soe sog soi soo sop sor sos sot sou spa spc spe spg spi spo spp spr sps spt spu sr- sra src sre srg sri sro srp srr srs srt ss- ssa ssc sse ssg ssi sso ssp ssr sss sst ssu sta stc ste stg sti sto stp str sts stt stu sua suc sue sug sui suo sup sur sus sut suu taa tac tae tag tai tao tap tar tas tat tau tca tcc tce tcg tci tco tcp tcr tcs tct tcu te- tea tec tee teg tei teo tep ter tes tet teu tga tgc tge tgg tgi tgo tgp tgr tgs tgt tgu tia tic tie tig tii tio tip tir tis tit tiu to- toa toc toe tog toi too top tor tos tot tou tpa tpc tpe tpg tpi tpo tpp tpr tps tpt tpu tra trc tre trg tri tro trp trr trs trt tru tsa tsc tse tsg tsi tso tsp tsr tss tst tsu tta ttc tte ttg tti tto ttp ttr tts ttt ttu tua tuc tue tug tui tuo tup tur tus tut tuu ua- uaa uac uae uag uai uao uap uar uas uat uau uca ucc uce ucg uci uco ucp ucr ucs uct ucu uea uec uee ueg uei uep uer ues uet uga ugc uge ugg ugi ugo ugp ugr ugs ugt ugu uia uic uie uig uii uio uip uir uis uit uiu uoa uoc uoe uog uoo uop uor uos uot up- upa upc upe upg upi upo upp upr ups upt upu ur- ura urc ure urg uri uro urp urr urs urt uru usa usc use usg usi uso usp usr uss ust usu uta utc ute uti uto utp utr uts utt utu uua uuc uue uug uur uus uut uuu