sni snl snm snn sno snp snr sns snt soa soc sod soe soi sol som son soo sop sor sos sot spa spc spd spe spi spl spm spn spo spp spr sps spt sr- sra src srd sre sri srl srm srn sro srp srr srs srt ss- ssa ssc ssd sse ssi ssl ssm ssn sso ssp ssr sss sst sta stc std ste sti stl stm stn sto stp str sts stt taa tac tad tae tai tal tam tan tao tap tar tas tat tca tcc tcd tce tci tcl tcm tcn tco tcp tcr tcs tct tda tdc tdd tde tdi tdl tdm tdn tdo tdp tdr tds tdt te- tea tec ted tee tei tel tem ten teo tep ter tes tet tia tic tid tie tii til tim tin tio tip tir tis tit tla tlc tld tle tli tll tlm tln tlo tlp tlr tls tlt tma tmc tmd tme tmi tml tmm tmn tmo tmp tmr tms tmt tna tnc tnd tne tni tnl tnm tnn tno tnp tnr tns tnt to- toa toc tod toe toi tol tom ton too top tor tos tot tpa tpc tpd tpe tpi tpl tpm tpn tpo tpp tpr tps tpt tra trc trd tre tri trl trm trn tro trp trr trs trt tsa tsc tsd tse tsi tsl tsm tsn tso tsp tsr tss tst tta ttc ttd tte tti ttl ttm ttn tto ttp ttr tts ttt