sap sas sat sau sba sbb sbc sbd sbe sbl sbn sbp sbs sbt sbu sca scb scc scd sce scl scn scp scs sct scu sda sdb sdc sdd sde sdl sdn sdp sds sdt sdu se- sea seb sec sed see sel sen sep ses set seu sla slb slc sld sle sll sln slp sls slt slu sna snb snc snd sne snl snn snp sns snt snu spa spb spc spd spe spl spn spp sps spt spu ss- ssa ssb ssc ssd sse ssl ssn ssp sss sst ssu sta stb stc std ste stl stn stp sts stt stu sua sub suc sud sue sul sun sup sus sut suu taa tab tac tad tae tal tan tap tas tat tau tba tbb tbc tbd tbe tbl tbn tbp tbs tbt tbu tca tcb tcc tcd tce tcl tcn tcp tcs tct tcu tda tdb tdc tdd tde tdl tdn tdp tds tdt tdu te- tea teb tec ted tee tel ten tep tes tet teu tla tlc tld tle tll tln tlp tls tlt tlu tna tnb tnc tnd tne tnl tnn tnp tns tnt tpa tpb tpc tpd tpe tpl tpn tpp tps tpt tpu tsa tsb tsc tsd tse tsl tsn tsp tss tst tsu tta ttb ttc ttd tte ttl ttn ttp tts ttt ttu tua tub tuc tud tue tul tun tup tus tut tuu ua- uaa uab uac uad uae ual uan uap uas uat uau uba ubb ubc ube ubl ubn ubp ubs ubt ubu uca ucb ucc ucd uce ucl ucn ucp ucs uct ucu uda udb udc udd ude udl udn udp uds udt udu uea ueb uec ued uee uel uen uep ues uet ula ulb ulc uld ule ull uln ulp uls ult ulu un- una unb unc und une unl unn unp uns unt unu up- upa upb upc upd upe upn upp ups upt upu usa usb usc usd use usl usn usp uss ust usu uta utb utc utd ute utl utn utp uts utt utu uua uuc uue uun uus uut uuu