skk skl skr sks skt slb sle slf slg sli slj slk sll slr sls slt sr- srb sre srf srg sri srj srk srl srr srs srt ss- ssb sse ssf ssg ssi ssj ssk ssl ssr sss sst stb ste stf stg sti stj stk stl str sts stt tbb tbe tbf tbg tbi tbj tbk tbl tbr tbs tbt te- teb tee tef teg tei tej tek tel ter tes tet tfb tfe tff tfg tfi tfj tfk tfl tfr tfs tft tgb tge tgf tgg tgi tgk tgl tgr tgs tgt tib tie tif tig tii tik til tir tis tit tje tjf tji tjr tjs tkb tke tkg tkk tkl tkr tks tkt tle tlf tlg tli tlj tlk tll tlr tls tlt trb tre trf trg tri trk trl trr trs trt tsb tse tsf tsg tsi tsj tsk tsl tsr tss tst ttb tte ttf ttg tti ttk ttl ttr tts ttt