stf sti stk stl str sts stt stx sxc sxi sxl sxs sxt t-x taa tac tae taf tai tak tal tar tas tat tax tca tcc tce tcf tci tck tcl tcr tcs tct tcx te- tea tec tee tef tei tek tel ter tes tet tex tfa tfc tfe tff tfi tfk tfl tfr tfs tft tfx tia tic tie tif tii tik til tir tis tit tix tka tkc tke tkk tkl tkr tks tkt tla tlc tle tlf tli tlk tll tlr tls tlt tlx tra trc tre trf tri trk trl trr trs trt trx tsa tsc tse tsf tsi tsk tsl tsr tss tst tsx tta ttc tte ttf tti ttk ttl ttr tts ttt ttx txe txf txi txk txl txs txt xaa xac xaf xak xal xar xas xat xcf xci xcl xcr xcx xee xel xer xes xet xex xfa xfe xfl xfs xft xfx xia xic xie xii xis xit xix xke xkl xks xla xlf xli xlr xls xlt xrc xrf xrt xrx xsa xsc xsi xsl xss xst xtc xtf xti xtr xts xtx xxi xxl xxx