snn sno snp snr sns snt soa sob soc soe soi sol som son soo sop sor sos sot spa spb spc spe spi spl spm spn spo spp spr sps spt sr- sra srb src sre sri srl srm srn sro srp srr srs srt ss- ssa ssb ssc sse ssi ssl ssm ssn sso ssp ssr sss sst sta stb stc ste sti stl stm stn sto stp str sts stt taa tab tac tae tai tal tam tan tao tap tar tas tat tba tbb tbc tbe tbi tbl tbm tbn tbo tbp tbr tbs tbt tca tcb tcc tce tci tcl tcm tcn tco tcp tcr tcs tct te- tea teb tec tee tei tel tem ten teo tep ter tes tet tia tib tic tie tii til tim tin tio tip tir tis tit tla tlc tle tli tll tlm tln tlo tlp tlr tls tlt tma tmb tmc tme tmi tml tmm tmn tmo tmp tmr tms tmt tna tnb tnc tne tni tnl tnm tnn tno tnp tnr tns tnt to- toa tob toc toe toi tol tom ton too top tor tos tot tpa tpb tpc tpe tpi tpl tpm tpn tpo tpp tpr tps tpt tra trb trc tre tri trl trm trn tro trp trr trs trt tsa tsb tsc tse tsi tsl tsm tsn tso tsp tsr tss tst tta ttb ttc tte tti ttl ttm ttn tto ttp ttr tts ttt