sio sir sis sit siu sk- ska skc ske ski skk sko skr sks skt sku sna snc sne sni snk snn sno snr sns snt snu soa soc soe soi sok son soo sor sos sot sou sr- sra src sre sri srk srn sro srr srs srt ss- ssa ssc sse ssi ssk ssn sso ssr sss sst ssu sta stc ste sti stk stn sto str sts stt stu sua suc sue sui suk sun suo sur sus sut suu taa tac tae tai tak tan tao tar tas tat tau tca tcc tce tci tck tcn tco tcr tcs tct tcu te- tea tec tee tei tek ten teo ter tes tet teu tia tic tie tii tik tin tio tir tis tit tiu tka tkc tke tkk tko tkr tks tkt tna tnc tne tni tnk tnn tno tnr tns tnt to- toa toc toe toi tok ton too tor tos tot tou tra trc tre tri trk trn tro trr trs trt tru tsa tsc tse tsi tsk tsn tso tsr tss tst tsu tta ttc tte tti ttk ttn tto ttr tts ttt ttu tua tuc tue tui tuk tun tuo tur tus tut tuu ua- uaa uac uae uai uak uan uao uar uas uat uau uca ucc uce uci uck ucn uco ucr ucs uct ucu uea uec uee uei uen uer ues uet uia uic uie uii uin uio uir uis uit uiu uka ukc uke uki ukk ukn ukr uku un- una unc une uni unk unn uno unr uns unt unu uoa uoc uoe uok uon uoo uor uos uot ur- ura urc ure uri urk urn uro urr urs urt uru usa usc use usi usk usn uso usr uss ust usu uta utc ute uti utk utn uto utr uts utt utu uua uuc uue uun uur uus uut uuu