sds sdt sdu se- sec sed see sel sem sen seo sep ses set seu slc sld sle sll slm sln slo slp sls slt slu smc smd sme sml smm smn smo smp sms smt smu snc snd sne snl snm snn sno snp sns snt snu soc sod soe sol som son soo sop sos sot sou spc spd spe spl spm spn spo spp sps spt spu ss- ssc ssd sse ssl ssm ssn sso ssp sss sst ssu stc std ste stl stm stn sto stp sts stt stu suc sud sue sul sum sun suo sup sus sut suu tcc tcd tce tcl tcm tcn tco tcp tcs tct tcu tdc tdd tde tdl tdm tdn tdo tdp tds tdt tdu te- tec ted tee tel tem ten teo tep tes tet teu tlc tld tle tll tlm tln tlo tlp tls tlt tlu tmc tmd tme tml tmm tmn tmo tmp tms tmt tmu tnc tnd tne tnl tnm tnn tno tnp tns tnt to- toc tod toe tol tom ton too top tos tot tou tpc tpd tpe tpl tpm tpn tpo tpp tps tpt tpu tsc tsd tse tsl tsm tsn tso tsp tss tst tsu ttc ttd tte ttl ttm ttn tto ttp tts ttt ttu tuc tud tue tul tum tun tuo tup tus tut tuu ucc ucd uce ucl ucm ucn uco ucp ucs uct ucu udc udd ude udl udm udn udo udp uds udt udu uec ued uee uel uem uen uep ues uet ulc uld ule ull ulm uln ulo ulp uls ult ulu um- umc umd ume uml umm umn umo ump ums umt umu un- unc und une unl unm unn uno unp uns unt unu uoc uod uoe uol uom uon uoo uop uos uot up- upc upd upe upm upn upo upp ups upt upu usc usd use usl usm usn uso usp uss ust usu utc utd ute utl utm utn uto utp uts utt utu uuc uue uum uun uus uut uuu