spe spf sph spi spn spo spp spr sps spt sr- sra src srd sre srf srh sri srn sro srp srr srs srt ss- ssa ssc ssd sse ssf ssh ssi ssn sso ssp ssr sss sst sta stc std ste stf sth sti stn sto stp str sts stt taa tac tad tae taf tah tai tan tao tap tar tas tat tca tcc tcd tce tcf tch tci tcn tco tcp tcr tcs tct tda tdc tdd tde tdf tdh tdi tdn tdo tdp tdr tds tdt te- tea tec ted tee tef teh tei ten teo tep ter tes tet tfa tfc tfd tfe tff tfh tfi tfn tfo tfp tfr tfs tft th- tha thc thd the thf thh thi thn tho thp thr ths tht tia tic tid tie tif tih tii tin tio tip tir tis tit tna tnc tnd tne tnf tnh tni tnn tno tnp tnr tns tnt to- toa toc tod toe tof toh toi ton too top tor tos tot tpa tpc tpd tpe tpf tph tpi tpn tpo tpp tpr tps tpt tra trc trd tre trf trh tri trn tro trp trr trs trt tsa tsc tsd tse tsf tsh tsi tsn tso tsp tsr tss tst tta ttc ttd tte ttf tth tti ttn tto ttp ttr tts ttt