scc scd scg sci sco scp scr scs sct scu sda sdc sdd sdg sdi sdo sdp sdr sds sdt sdu sga sgc sgd sgg sgi sgo sgp sgr sgs sgt sgu sia sic sid sig sii sio sip sir sis sit siu soa soc sod sog soi soo sop sor sos sot sou spa spc spd spg spi spo spp spr sps spt spu sr- sra src srd srg sri sro srp srr srs srt ss- ssa ssc ssd ssg ssi sso ssp ssr sss sst ssu sta stc std stg sti sto stp str sts stt stu sua suc sud sug sui suo sup sur sus sut suu taa tac tad tag tai tao tap tar tas tat tau tca tcc tcd tcg tci tco tcp tcr tcs tct tcu tda tdc tdd tdg tdi tdo tdp tdr tds tdt tdu tga tgc tgg tgi tgo tgp tgr tgs tgt tgu tia tic tid tig tii tio tip tir tis tit tiu to- toa toc tod tog toi too top tor tos tot tou tpa tpc tpd tpg tpi tpo tpp tpr tps tpt tpu tra trc trd trg tri tro trp trr trs trt tru tsa tsc tsd tsg tsi tso tsp tsr tss tst tsu tta ttc ttd ttg tti tto ttp ttr tts ttt ttu tua tuc tud tug tui tuo tup tur tus tut tuu ua- uaa uac uad uag uai uao uap uar uas uat uau uca ucc ucd ucg uci uco ucp ucr ucs uct ucu uda udc udd udg udi udo udp udr uds udt udu uga ugc ugg ugi ugo ugp ugr ugs ugt ugu uia uic uid uig uii uio uip uir uis uit uiu uoa uoc uod uog uoo uop uor uos uot up- upa upc upd upg upi upo upp upr ups upt upu ur- ura urc urd urg uri uro urp urr urs urt uru usa usc usd usg usi uso usp usr uss ust usu uta utc utd uti uto utp utr uts utt utu uua uuc uug uur uus uut uuu