soo sop sor sos sot sox spc spe spi spm spn spo spp spr sps spt spx sr- src sre sri srm srn sro srp srr srs srt srx ss- ssc sse ssi ssm ssn sso ssp ssr sss sst ssx stc ste sti stm stn sto stp str sts stt stx sxc sxi sxm sxn sxs sxt t-x tcc tce tci tcm tcn tco tcp tcr tcs tct tcx te- tec tee tei tem ten teo tep ter tes tet tex tic tie tii tim tin tio tip tir tis tit tix tmc tme tmi tmm tmn tmo tmp tmr tms tmt tmx tnc tne tni tnm tnn tno tnp tnr tns tnt tnx to- toc toe toi tom ton too top tor tos tot tox tpc tpe tpi tpm tpn tpo tpp tpr tps tpt tpx trc tre tri trm trn tro trp trr trs trt trx tsc tse tsi tsm tsn tso tsp tsr tss tst tsx ttc tte tti ttm ttn tto ttp ttr tts ttt ttx txe txi txn txs txt xci xcp xcr xcx xee xem xen xep xer xes xet xex xic xie xii xin xio xis xit xix xmc xmi xmm xmo xmp xmr xms xmt xmx xnc xno xns xoc xoi xom xon xoo xop xor xos xot xox xpc xpe xpm xpn xpo xpp xps xpt xrc xrt xrx xsc xsi xsm xsp xss xst xtc xti xtm xtp xtr xts xtx xxi xxo xxp xxx