spb spc spe spf spg sph spi spk spl spo spp spr sps spt sr- sra srb src sre srf srg srh sri srk srl sro srp srr srs srt ss- ssa ssb ssc sse ssf ssg ssh ssi ssk ssl sso ssp ssr sss sst sta stb stc ste stf stg sth sti stk stl sto stp str sts stt taa tab tac tae taf tag tah tai tak tal tao tap tar tas tat tba tbb tbc tbe tbf tbg tbh tbi tbk tbl tbo tbp tbr tbs tbt tca tcb tcc tce tcf tcg tch tci tck tcl tco tcp tcr tcs tct te- tea teb tec tee tef teg teh tei tek tel teo tep ter tes tet tfa tfb tfc tfe tff tfg tfh tfi tfk tfl tfo tfp tfr tfs tft tga tgb tgc tge tgf tgg tgh tgi tgk tgl tgo tgp tgr tgs tgt th- tha thb thc the thf thg thh thi thk thl tho thp thr ths tht tia tib tic tie tif tig tih tii tik til tio tip tir tis tit tka tkb tkc tke tkg tkk tkl tko tkp tkr tks tkt tla tlc tle tlf tlg tlh tli tlk tll tlo tlp tlr tls tlt to- toa tob toc toe tof tog toh toi tok tol too top tor tos tot tpa tpb tpc tpe tpf tpg tph tpi tpk tpl tpo tpp tpr tps tpt tra trb trc tre trf trg trh tri trk trl tro trp trr trs trt tsa tsb tsc tse tsf tsg tsh tsi tsk tsl tso tsp tsr tss tst tta ttb ttc tte ttf ttg tth tti ttk ttl tto ttp ttr tts ttt