slc sle slh sll sln slo slp slr sls slt slu snc sne snl snn sno snp snr sns snt snu soc soe soh sol son soo sop sor sos sot sou spc spe sph spl spn spo spp spr sps spt spu sr- src sre srh srl srn sro srp srr srs srt ss- ssc sse ssh ssl ssn sso ssp ssr sss sst ssu stc ste sth stl stn sto stp str sts stt stu suc sue suh sul sun suo sup sur sus sut suu tcc tce tch tcl tcn tco tcp tcr tcs tct tcu te- tec tee teh tel ten teo tep ter tes tet teu th- thc the thh thl thn tho thp thr ths tht thu tlc tle tlh tll tln tlo tlp tlr tls tlt tlu tnc tne tnh tnl tnn tno tnp tnr tns tnt to- toc toe toh tol ton too top tor tos tot tou tpc tpe tph tpl tpn tpo tpp tpr tps tpt tpu trc tre trh trl trn tro trp trr trs trt tru tsc tse tsh tsl tsn tso tsp tsr tss tst tsu ttc tte tth ttl ttn tto ttp ttr tts ttt ttu tuc tue tuh tul tun tuo tup tur tus tut tuu ucc uce uch ucl ucn uco ucp ucr ucs uct ucu uec uee ueh uel uen uep uer ues uet uhc uhe uhh uhl uho uhp uhr uhs uht uhu ulc ule ull uln ulo ulp ulr uls ult ulu un- unc une unh unl unn uno unp unr uns unt unu uoc uoe uol uon uoo uop uor uos uot up- upc upe uph upn upo upp upr ups upt upu ur- urc ure url urn uro urp urr urs urt uru usc use ush usl usn uso usp usr uss ust usu utc ute uth utl utn uto utp utr uts utt utu uuc uue uun uur uus uut uuu