smu sob soe soi sok sol som soo sor sos sot sou sr- srb sre sri srk srl srm sro srr srs srt ss- ssb sse ssi ssk ssl ssm sso ssr sss sst ssu stb ste sti stk stl stm sto str sts stt stu sub sue sui suk sul sum suo sur sus sut suu tbb tbe tbi tbk tbl tbm tbo tbr tbs tbt tbu te- teb tee tei tek tel tem teo ter tes tet teu tib tie tii tik til tim tio tir tis tit tiu tkb tke tkk tkl tkm tko tkr tks tkt tle tli tlk tll tlm tlo tlr tls tlt tlu tmb tme tmi tmk tml tmm tmo tmr tms tmt tmu to- tob toe toi tok tol tom too tor tos tot tou trb tre tri trk trl trm tro trr trs trt tru tsb tse tsi tsk tsl tsm tso tsr tss tst tsu ttb tte tti ttk ttl ttm tto ttr tts ttt ttu tub tue tui tuk tul tum tuo tur tus tut tuu ubb ube ubi ubk ubl ubo ubr ubs ubt ubu ueb uee uei uel uem uer ues uet uib uie uii uil uim uio uir uis uit uiu ukb uke uki ukk ukl ukr uku ulb ule uli ulk ull ulm ulo ulr uls ult ulu um- umb ume umi uml umm umo umr ums umt umu uob uoe uok uol uom uoo uor uos uot ur- urb ure uri urk url urm uro urr urs urt uru usb use usi usk usl usm uso usr uss ust usu utb ute uti utk utl utm uto utr uts utt utu uue uum uur uus uut uuu