ste stf sth sti stm stn stp sts stt stx sxi sxm sxn sxs sxt t-x tdd tde tdf tdh tdi tdm tdn tdp tds tdt tdx te- ted tee tef teh tei tem ten tep tes tet tex tfd tfe tff tfh tfi tfm tfn tfp tfs tft tfx th- thd the thf thh thi thm thn thp ths tht thx tid tie tif tih tii tim tin tip tis tit tix tmd tme tmf tmh tmi tmm tmn tmp tms tmt tmx tnd tne tnf tnh tni tnm tnn tnp tns tnt tnx tpd tpe tpf tph tpi tpm tpn tpp tps tpt tpx tsd tse tsf tsh tsi tsm tsn tsp tss tst tsx ttd tte ttf tth tti ttm ttn ttp tts ttt ttx txe txf txi txn txs txt xde xdf xdh xdi xdm xds xdt xed xee xem xen xep xes xet xex xfe xfh xfm xfn xfs xft xfx xhd xhp xht xie xii xin xis xit xix xmd xmf xmh xmi xmm xmp xms xmt xmx xns xpd xpe xpf xpm xpn xpp xps xpt xsi xsm xsp xss xst xtf xti xtm xtp xts xtx xxi xxp xxx