sth sti stl stm sto str sts stt stx sxi sxl sxm sxs sxt t-x te- tee tef teh tei tel tem teo ter tes tet tex tfe tff tfh tfi tfl tfm tfo tfr tfs tft tfx th- the thf thh thi thl thm tho thr ths tht thx tie tif tih tii til tim tio tir tis tit tix tle tlf tlh tli tll tlm tlo tlr tls tlt tlx tme tmf tmh tmi tml tmm tmo tmr tms tmt tmx to- toe tof toh toi tol tom too tor tos tot tox tre trf trh tri trl trm tro trr trs trt trx tse tsf tsh tsi tsl tsm tso tsr tss tst tsx tte ttf tth tti ttl ttm tto ttr tts ttt ttx txe txf txi txl txs txt xee xel xem xer xes xet xex xfe xfh xfl xfm xfs xft xfx xht xie xii xio xis xit xix xlf xli xlm xlr xls xlt xmf xmh xmi xml xmm xmo xmr xms xmt xmx xof xoi xom xoo xor xos xot xox xrf xrt xrx xsi xsl xsm xss xst xtf xti xtm xtr xts xtx xxi xxl xxo xxx