spe spg spi spl spo spp spr sps spt spx sr- sra sre srg sri srl sro srp srr srs srt srx ss- ssa sse ssg ssi ssl sso ssp ssr sss sst ssx sta ste stg sti stl sto stp str sts stt stx sxi sxl sxs sxt t-x taa tae tag tai tal tao tap tar tas tat tax te- tea tee teg tei tel teo tep ter tes tet tex tga tge tgg tgi tgl tgo tgp tgr tgs tgt tia tie tig tii til tio tip tir tis tit tix tla tle tlg tli tll tlo tlp tlr tls tlt tlx to- toa toe tog toi tol too top tor tos tot tox tpa tpe tpg tpi tpl tpo tpp tpr tps tpt tpx tra tre trg tri trl tro trp trr trs trt trx tsa tse tsg tsi tsl tso tsp tsr tss tst tsx tta tte ttg tti ttl tto ttp ttr tts ttt ttx txe txi txl txs txt xaa xag xal xap xar xas xat xee xeg xel xep xer xes xet xex xge xgi xgl xgp xia xie xii xio xis xit xix xla xlg xli xlr xls xlt xoa xog xoi xoo xop xor xos xot xox xpa xpe xpg xpl xpo xpp xps xpt xrt xrx xsa xsi xsl xsp xss xst xti xtp xtr xts xtx xxi xxl xxo xxp xxx