sid sie sii sil sio sip siq sir sis sit sla sld sle sli sll slo slp slq slr sls slt soa sod soe soi sol soo sop soq sor sos sot spa spd spe spi spl spo spp spq spr sps spt sqa sqd sqi sql sqq sqr sqs sr- sra srd sre sri srl sro srp srq srr srs srt ss- ssa ssd sse ssi ssl sso ssp ssq ssr sss sst sta std ste sti stl sto stp stq str sts stt taa tad tae tai tal tao tap taq tar tas tat tda tdd tde tdi tdl tdo tdp tdr tds tdt te- tea ted tee tei tel teo tep teq ter tes tet tia tid tie tii til tio tip tir tis tit tla tld tle tli tll tlo tlp tlr tls tlt to- toa tod toe toi tol too top toq tor tos tot tpa tpd tpe tpi tpl tpo tpp tpq tpr tps tpt tqo tra trd tre tri trl tro trp trq trr trs trt tsa tsd tse tsi tsl tso tsp tsq tsr tss tst tta ttd tte tti ttl tto ttp ttr tts ttt