sos sot sou spc spe sph spi spk spo spp spr sps spt spu sr- src sre srh sri srk sro srp srr srs srt ss- ssc sse ssh ssi ssk sso ssp ssr sss sst ssu stc ste sth sti stk sto stp str sts stt stu suc sue suh sui suk suo sup sur sus sut suu tcc tce tch tci tck tco tcp tcr tcs tct tcu te- tec tee teh tei tek teo tep ter tes tet teu th- thc the thh thi thk tho thp thr ths tht thu tic tie tih tii tik tio tip tir tis tit tiu tkc tke tkk tko tkp tkr tks tkt to- toc toe toh toi tok too top tor tos tot tou tpc tpe tph tpi tpk tpo tpp tpr tps tpt tpu trc tre trh tri trk tro trp trr trs trt tru tsc tse tsh tsi tsk tso tsp tsr tss tst tsu ttc tte tth tti ttk tto ttp ttr tts ttt ttu tuc tue tuh tui tuk tuo tup tur tus tut tuu ucc uce uch uci uck uco ucp ucr ucs uct ucu uec uee ueh uei uep uer ues uet uhc uhe uhh uhi uho uhp uhr uhs uht uhu uic uie uii uio uip uir uis uit uiu ukc uke uki ukk ukp ukr uku uoc uoe uok uoo uop uor uos uot up- upc upe uph upi upk upo upp upr ups upt upu ur- urc ure uri urk uro urp urr urs urt uru usc use ush usi usk uso usp usr uss ust usu utc ute uth uti utk uto utp utr uts utt utu uuc uue uur uus uut uuu