soa sob soc soe sof soi sol son soo sop sor sos sot spa spb spc spe spf spi spl spn spo spp spr sps spt sr- sra srb src sre srf sri srl srn sro srp srr srs srt ss- ssa ssb ssc sse ssf ssi ssl ssn sso ssp ssr sss sst sta stb stc ste stf sti stl stn sto stp str sts stt taa tab tac tae taf tai tal tan tao tap tar tas tat tba tbb tbc tbe tbf tbi tbl tbn tbo tbp tbr tbs tbt tca tcb tcc tce tcf tci tcl tcn tco tcp tcr tcs tct te- tea teb tec tee tef tei tel ten teo tep ter tes tet tfa tfb tfc tfe tff tfi tfl tfn tfo tfp tfr tfs tft tia tib tic tie tif tii til tin tio tip tir tis tit tla tlc tle tlf tli tll tln tlo tlp tlr tls tlt tna tnb tnc tne tnf tni tnl tnn tno tnp tnr tns tnt to- toa tob toc toe tof toi tol ton too top tor tos tot tpa tpb tpc tpe tpf tpi tpl tpn tpo tpp tpr tps tpt tra trb trc tre trf tri trl trn tro trp trr trs trt tsa tsb tsc tse tsf tsi tsl tsn tso tsp tsr tss tst tta ttb ttc tte ttf tti ttl ttn tto ttp ttr tts ttt