scc scd sce scg sci scn sco scs sct scu sda sdc sdd sde sdg sdi sdn sdo sds sdt sdu se- sea sec sed see seg sei sen seo ses set seu sga sgc sgd sge sgg sgi sgn sgo sgs sgt sgu sia sic sid sie sig sii sin sio sis sit siu sna snc snd sne sng sni snn sno sns snt snu soa soc sod soe sog soi son soo sos sot sou ss- ssa ssc ssd sse ssg ssi ssn sso sss sst ssu sta stc std ste stg sti stn sto sts stt stu sua suc sud sue sug sui sun suo sus sut suu taa tac tad tae tag tai tan tao tas tat tau tca tcc tcd tce tcg tci tcn tco tcs tct tcu tda tdc tdd tde tdg tdi tdn tdo tds tdt tdu te- tea tec ted tee teg tei ten teo tes tet teu tga tgc tge tgg tgi tgn tgo tgs tgt tgu tia tic tid tie tig tii tin tio tis tit tiu tna tnc tnd tne tng tni tnn tno tns tnt to- toa toc tod toe tog toi ton too tos tot tou tsa tsc tsd tse tsg tsi tsn tso tss tst tsu tta ttc ttd tte ttg tti ttn tto tts ttt ttu tua tuc tud tue tug tui tun tuo tus tut tuu ua- uaa uac uad uae uag uai uan uao uas uat uau uca ucc ucd uce ucg uci ucn uco ucs uct ucu uda udc udd ude udg udi udn udo uds udt udu uea uec ued uee ueg uei uen ues uet uga ugc uge ugg ugi ugn ugo ugs ugt ugu uia uic uid uie uig uii uin uio uis uit uiu un- una unc und une ung uni unn uno uns unt unu uoa uoc uod uoe uog uon uoo uos uot usa usc usd use usg usi usn uso uss ust usu uta utc utd ute uti utn uto uts utt utu uua uuc uue uug uun uus uut uuu