sos sot sox sr- sra sre srf sri srl srn sro srr srs srt srx ss- ssa sse ssf ssi ssl ssn sso ssr sss sst ssx sta ste stf sti stl stn sto str sts stt stx sxi sxl sxn sxs sxt t-x taa tae taf tai tal tan tao tar tas tat tax te- tea tee tef tei tel ten teo ter tes tet tex tfa tfe tff tfi tfl tfn tfo tfr tfs tft tfx tia tie tif tii til tin tio tir tis tit tix tla tle tlf tli tll tln tlo tlr tls tlt tlx tna tne tnf tni tnl tnn tno tnr tns tnt tnx to- toa toe tof toi tol ton too tor tos tot tox tra tre trf tri trl trn tro trr trs trt trx tsa tse tsf tsi tsl tsn tso tsr tss tst tsx tta tte ttf tti ttl ttn tto ttr tts ttt ttx txe txf txi txl txn txs txt xaa xaf xal xan xar xas xat xee xel xen xer xes xet xex xfa xfe xfl xfn xfs xft xfx xia xie xii xin xio xis xit xix xla xlf xli xlr xls xlt xna xno xns xoa xof xoi xon xoo xor xos xot xox xrf xrt xrx xsa xsi xsl xss xst xtf xti xtr xts xtx xxi xxl xxo xxx