spf sph spi spn spo spp spr sps spt sr- sra srb src sre srf srh sri srn sro srp srr srs srt ss- ssa ssb ssc sse ssf ssh ssi ssn sso ssp ssr sss sst sta stb stc ste stf sth sti stn sto stp str sts stt taa tab tac tae taf tah tai tan tao tap tar tas tat tba tbb tbc tbe tbf tbh tbi tbn tbo tbp tbr tbs tbt tca tcb tcc tce tcf tch tci tcn tco tcp tcr tcs tct te- tea teb tec tee tef teh tei ten teo tep ter tes tet tfa tfb tfc tfe tff tfh tfi tfn tfo tfp tfr tfs tft th- tha thb thc the thf thh thi thn tho thp thr ths tht tia tib tic tie tif tih tii tin tio tip tir tis tit tna tnb tnc tne tnf tnh tni tnn tno tnp tnr tns tnt to- toa tob toc toe tof toh toi ton too top tor tos tot tpa tpb tpc tpe tpf tph tpi tpn tpo tpp tpr tps tpt tra trb trc tre trf trh tri trn tro trp trr trs trt tsa tsb tsc tse tsf tsh tsi tsn tso tsp tsr tss tst tta ttb ttc tte ttf tth tti ttn tto ttp ttr tts ttt