sri srn sro srr srs srt srx ss- ssa ssd sse ssh ssi ssn sso ssr sss sst ssx sta std ste sth sti stn sto str sts stt stx sxi sxn sxs sxt t-x taa tad tae tah tai tan tao tar tas tat tax tda tdd tde tdh tdi tdn tdo tdr tds tdt tdx te- tea ted tee teh tei ten teo ter tes tet tex th- tha thd the thh thi thn tho thr ths tht thx tia tid tie tih tii tin tio tir tis tit tix tna tnd tne tnh tni tnn tno tnr tns tnt tnx to- toa tod toe toh toi ton too tor tos tot tox tra trd tre trh tri trn tro trr trs trt trx tsa tsd tse tsh tsi tsn tso tsr tss tst tsx tta ttd tte tth tti ttn tto ttr tts ttt ttx txe txi txn txs txt xaa xad xan xar xas xat xda xde xdh xdi xdr xds xdt xed xee xen xer xes xet xex xhd xht xia xie xii xin xio xis xit xix xna xno xns xoa xod xoi xon xoo xor xos xot xox xrd xrt xrx xsa xsi xss xst xti xtr xts xtx xxi xxo xxx