ssf ssk ssm ssp ssr sss sst ssx sta stc ste stf stk stm stp str sts stt stx sxc sxm sxs sxt t-x taa tac tae taf tak tam tap tar tas tat tax tca tcc tce tcf tck tcm tcp tcr tcs tct tcx te- tea tec tee tef tek tem tep ter tes tet tex tfa tfc tfe tff tfk tfm tfp tfr tfs tft tfx tka tkc tke tkk tkm tkp tkr tks tkt tma tmc tme tmf tmk tmm tmp tmr tms tmt tmx tpa tpc tpe tpf tpk tpm tpp tpr tps tpt tpx tra trc tre trf trk trm trp trr trs trt trx tsa tsc tse tsf tsk tsm tsp tsr tss tst tsx tta ttc tte ttf ttk ttm ttp ttr tts ttt ttx txe txf txk txs txt xaa xac xaf xak xam xap xar xas xat xcf xcp xcr xcx xee xem xep xer xes xet xex xfa xfe xfm xfs xft xfx xke xks xma xmc xmf xmk xmm xmp xmr xms xmt xmx xpa xpc xpe xpf xpm xpp xps xpt xrc xrf xrt xrx xsa xsc xsm xsp xss xst xtc xtf xtm xtp xtr xts xtx xxp xxx