spe sph spi spo spp spr sps spt spx sr- sra srd sre srh sri sro srp srr srs srt srx ss- ssa ssd sse ssh ssi sso ssp ssr sss sst ssx sta std ste sth sti sto stp str sts stt stx sxi sxs sxt t-x taa tad tae tah tai tao tap tar tas tat tax tda tdd tde tdh tdi tdo tdp tdr tds tdt tdx te- tea ted tee teh tei teo tep ter tes tet tex th- tha thd the thh thi tho thp thr ths tht thx tia tid tie tih tii tio tip tir tis tit tix to- toa tod toe toh toi too top tor tos tot tox tpa tpd tpe tph tpi tpo tpp tpr tps tpt tpx tra trd tre trh tri tro trp trr trs trt trx tsa tsd tse tsh tsi tso tsp tsr tss tst tsx tta ttd tte tth tti tto ttp ttr tts ttt ttx txe txi txs txt xaa xad xap xar xas xat xda xde xdh xdi xdr xds xdt xed xee xep xer xes xet xex xhd xhp xht xia xie xii xio xis xit xix xoa xod xoi xoo xop xor xos xot xox xpa xpd xpe xpo xpp xps xpt xrd xrt xrx xsa xsi xsp xss xst xti xtp xtr xts xtx xxi xxo xxp xxx