soa sod soe sof soi son soo sor sos sot sox sr- sra srd sre srf sri srn sro srr srs srt srx ss- ssa ssd sse ssf ssi ssn sso ssr sss sst ssx sta std ste stf sti stn sto str sts stt stx sxi sxn sxs sxt t-x taa tad tae taf tai tan tao tar tas tat tax tda tdd tde tdf tdi tdn tdo tdr tds tdt tdx te- tea ted tee tef tei ten teo ter tes tet tex tfa tfd tfe tff tfi tfn tfo tfr tfs tft tfx tia tid tie tif tii tin tio tir tis tit tix tna tnd tne tnf tni tnn tno tnr tns tnt tnx to- toa tod toe tof toi ton too tor tos tot tox tra trd tre trf tri trn tro trr trs trt trx tsa tsd tse tsf tsi tsn tso tsr tss tst tsx tta ttd tte ttf tti ttn tto ttr tts ttt ttx txe txf txi txn txs txt xaa xad xaf xan xar xas xat xda xde xdf xdi xdr xds xdt xed xee xen xer xes xet xex xfa xfe xfn xfs xft xfx xia xie xii xin xio xis xit xix xna xno xns xoa xod xof xoi xon xoo xor xos xot xox xrd xrf xrt xrx xsa xsi xss xst xtf xti xtr xts xtx xxi xxo xxx