sgs sgt sgu sic sie sif sig sii sin sio sir sis sit siu snc sne snf sng sni snn sno snr sns snt snu soc soe sof sog soi son soo sor sos sot sou sr- src sre srf srg sri srn sro srr srs srt ss- ssc sse ssf ssg ssi ssn sso ssr sss sst ssu stc ste stf stg sti stn sto str sts stt stu suc sue suf sug sui sun suo sur sus sut suu tcc tce tcf tcg tci tcn tco tcr tcs tct tcu te- tec tee tef teg tei ten teo ter tes tet teu tfc tfe tff tfg tfi tfn tfo tfr tfs tft tfu tgc tge tgf tgg tgi tgn tgo tgr tgs tgt tgu tic tie tif tig tii tin tio tir tis tit tiu tnc tne tnf tng tni tnn tno tnr tns tnt to- toc toe tof tog toi ton too tor tos tot tou trc tre trf trg tri trn tro trr trs trt tru tsc tse tsf tsg tsi tsn tso tsr tss tst tsu ttc tte ttf ttg tti ttn tto ttr tts ttt ttu tuc tue tuf tug tui tun tuo tur tus tut tuu ucc uce ucf ucg uci ucn uco ucr ucs uct ucu uec uee uef ueg uei uen uer ues uet ufc ufe uff ufg ufi ufn ufo ufr ufs uft ufu ugc uge ugf ugg ugi ugn ugo ugr ugs ugt ugu uic uie uif uig uii uin uio uir uis uit uiu un- unc une unf ung uni unn uno unr uns unt unu uoc uoe uog uon uoo uor uos uot ur- urc ure urf urg uri urn uro urr urs urt uru usc use usf usg usi usn uso usr uss ust usu utc ute utf uti utn uto utr uts utt utu uuc uue uug uun uur uus uut uuu