sct scu sda sdc sdd sde sdg sdn sdo sdr sds sdt sdu se- sea sec sed see seg sen seo ser ses set seu sga sgc sgd sge sgg sgn sgo sgr sgs sgt sgu sna snc snd sne sng snn sno snr sns snt snu soa soc sod soe sog son soo sor sos sot sou sr- sra src srd sre srg srn sro srr srs srt ss- ssa ssc ssd sse ssg ssn sso ssr sss sst ssu sta stc std ste stg stn sto str sts stt stu sua suc sud sue sug sun suo sur sus sut suu taa tac tad tae tag tan tao tar tas tat tau tca tcc tcd tce tcg tcn tco tcr tcs tct tcu tda tdc tdd tde tdg tdn tdo tdr tds tdt tdu te- tea tec ted tee teg ten teo ter tes tet teu tga tgc tge tgg tgn tgo tgr tgs tgt tgu tna tnc tnd tne tng tnn tno tnr tns tnt to- toa toc tod toe tog ton too tor tos tot tou tra trc trd tre trg trn tro trr trs trt tru tsa tsc tsd tse tsg tsn tso tsr tss tst tsu tta ttc ttd tte ttg ttn tto ttr tts ttt ttu tua tuc tud tue tug tun tuo tur tus tut tuu ua- uaa uac uad uae uag uan uao uar uas uat uau uca ucc ucd uce ucg ucn uco ucr ucs uct ucu uda udc udd ude udg udn udo udr uds udt udu uea uec ued uee ueg uen uer ues uet uga ugc uge ugg ugn ugo ugr ugs ugt ugu un- una unc und une ung unn uno unr uns unt unu uoa uoc uod uoe uog uon uoo uor uos uot ur- ura urc urd ure urg urn uro urr urs urt uru usa usc usd use usg usn uso usr uss ust usu uta utc utd ute utn uto utr uts utt utu uua uuc uue uug uun uur uus uut uuu