sot sou sr- src sre srg sri srk srn sro srr srs srt ss- ssc sse ssg ssi ssk ssn sso ssr sss sst ssu stc ste stg sti stk stn sto str sts stt stu suc sue sug sui suk sun suo sur sus sut suu tcc tce tcg tci tck tcn tco tcr tcs tct tcu te- tec tee teg tei tek ten teo ter tes tet teu tgc tge tgg tgi tgk tgn tgo tgr tgs tgt tgu tic tie tig tii tik tin tio tir tis tit tiu tkc tke tkg tkk tko tkr tks tkt tnc tne tng tni tnk tnn tno tnr tns tnt to- toc toe tog toi tok ton too tor tos tot tou trc tre trg tri trk trn tro trr trs trt tru tsc tse tsg tsi tsk tsn tso tsr tss tst tsu ttc tte ttg tti ttk ttn tto ttr tts ttt ttu tuc tue tug tui tuk tun tuo tur tus tut tuu ucc uce ucg uci uck ucn uco ucr ucs uct ucu uec uee ueg uei uen uer ues uet ugc uge ugg ugi ugk ugn ugo ugr ugs ugt ugu uic uie uig uii uin uio uir uis uit uiu ukc uke uki ukk ukn ukr uku un- unc une ung uni unk unn uno unr uns unt unu uoc uoe uog uok uon uoo uor uos uot ur- urc ure urg uri urk urn uro urr urs urt uru usc use usg usi usk usn uso usr uss ust usu utc ute uti utk utn uto utr uts utt utu uuc uue uug uun uur uus uut uuu