spg spi spk spn spp spr sps spt spu sr- src sre srg sri srk srn srp srr srs srt ss- ssc sse ssg ssi ssk ssn ssp ssr sss sst ssu stc ste stg sti stk stn stp str sts stt stu suc sue sug sui suk sun sup sur sus sut suu tcc tce tcg tci tck tcn tcp tcr tcs tct tcu te- tec tee teg tei tek ten tep ter tes tet teu tgc tge tgg tgi tgk tgn tgp tgr tgs tgt tgu tic tie tig tii tik tin tip tir tis tit tiu tkc tke tkg tkk tkp tkr tks tkt tnc tne tng tni tnk tnn tnp tnr tns tnt tpc tpe tpg tpi tpk tpn tpp tpr tps tpt tpu trc tre trg tri trk trn trp trr trs trt tru tsc tse tsg tsi tsk tsn tsp tsr tss tst tsu ttc tte ttg tti ttk ttn ttp ttr tts ttt ttu tuc tue tug tui tuk tun tup tur tus tut tuu ucc uce ucg uci uck ucn ucp ucr ucs uct ucu uec uee ueg uei uen uep uer ues uet ugc uge ugg ugi ugk ugn ugp ugr ugs ugt ugu uic uie uig uii uin uip uir uis uit uiu ukc uke uki ukk ukn ukp ukr uku un- unc une ung uni unk unn unp unr uns unt unu up- upc upe upg upi upk upn upp upr ups upt upu ur- urc ure urg uri urk urn urp urr urs urt uru usc use usg usi usk usn usp usr uss ust usu utc ute uti utk utn utp utr uts utt utu uuc uue uug uun uur uus uut uuu