sor sos sot sox spa spe spg spi spm spo spp spr sps spt spx sr- sra sre srg sri srm sro srp srr srs srt srx ss- ssa sse ssg ssi ssm sso ssp ssr sss sst ssx sta ste stg sti stm sto stp str sts stt stx sxi sxm sxs sxt t-x taa tae tag tai tam tao tap tar tas tat tax te- tea tee teg tei tem teo tep ter tes tet tex tga tge tgg tgi tgm tgo tgp tgr tgs tgt tia tie tig tii tim tio tip tir tis tit tix tma tme tmg tmi tmm tmo tmp tmr tms tmt tmx to- toa toe tog toi tom too top tor tos tot tox tpa tpe tpg tpi tpm tpo tpp tpr tps tpt tpx tra tre trg tri trm tro trp trr trs trt trx tsa tse tsg tsi tsm tso tsp tsr tss tst tsx tta tte ttg tti ttm tto ttp ttr tts ttt ttx txe txi txs txt xaa xag xam xap xar xas xat xee xeg xem xep xer xes xet xex xge xgi xgp xia xie xii xio xis xit xix xma xmg xmi xmm xmo xmp xmr xms xmt xmx xoa xog xoi xom xoo xop xor xos xot xox xpa xpe xpg xpm xpo xpp xps xpt xrt xrx xsa xsi xsm xsp xss xst xti xtm xtp xtr xts xtx xxi xxo xxp xxx