sco scr scs sct scu sda sdc sdd sde sdl sdn sdo sdr sds sdt sdu se- sea sec sed see sel sen seo ser ses set seu sla slc sld sle sll sln slo slr sls slt slu sna snc snd sne snl snn sno snr sns snt snu soa soc sod soe sol son soo sor sos sot sou sr- sra src srd sre srl srn sro srr srs srt ss- ssa ssc ssd sse ssl ssn sso ssr sss sst ssu sta stc std ste stl stn sto str sts stt stu sua suc sud sue sul sun suo sur sus sut suu taa tac tad tae tal tan tao tar tas tat tau tca tcc tcd tce tcl tcn tco tcr tcs tct tcu tda tdc tdd tde tdl tdn tdo tdr tds tdt tdu te- tea tec ted tee tel ten teo ter tes tet teu tla tlc tld tle tll tln tlo tlr tls tlt tlu tna tnc tnd tne tnl tnn tno tnr tns tnt to- toa toc tod toe tol ton too tor tos tot tou tra trc trd tre trl trn tro trr trs trt tru tsa tsc tsd tse tsl tsn tso tsr tss tst tsu tta ttc ttd tte ttl ttn tto ttr tts ttt ttu tua tuc tud tue tul tun tuo tur tus tut tuu ua- uaa uac uad uae ual uan uao uar uas uat uau uca ucc ucd uce ucl ucn uco ucr ucs uct ucu uda udc udd ude udl udn udo udr uds udt udu uea uec ued uee uel uen uer ues uet ula ulc uld ule ull uln ulo ulr uls ult ulu un- una unc und une unl unn uno unr uns unt unu uoa uoc uod uoe uol uon uoo uor uos uot ur- ura urc urd ure url urn uro urr urs urt uru usa usc usd use usl usn uso usr uss ust usu uta utc utd ute utl utn uto utr uts utt utu uua uuc uue uun uur uus uut uuu