sok sol son soo sop sos sot sou spc spe sph spk spl spn spo spp sps spt spu ss- ssc sse ssh ssk ssl ssn sso ssp sss sst ssu stc ste sth stk stl stn sto stp sts stt stu suc sue suh suk sul sun suo sup sus sut suu tcc tce tch tck tcl tcn tco tcp tcs tct tcu te- tec tee teh tek tel ten teo tep tes tet teu th- thc the thh thk thl thn tho thp ths tht thu tkc tke tkk tkl tko tkp tks tkt tlc tle tlh tlk tll tln tlo tlp tls tlt tlu tnc tne tnh tnk tnl tnn tno tnp tns tnt to- toc toe toh tok tol ton too top tos tot tou tpc tpe tph tpk tpl tpn tpo tpp tps tpt tpu tsc tse tsh tsk tsl tsn tso tsp tss tst tsu ttc tte tth ttk ttl ttn tto ttp tts ttt ttu tuc tue tuh tuk tul tun tuo tup tus tut tuu ucc uce uch uck ucl ucn uco ucp ucs uct ucu uec uee ueh uel uen uep ues uet uhc uhe uhh uhl uho uhp uhs uht uhu ukc uke ukk ukl ukn ukp uku ulc ule ulk ull uln ulo ulp uls ult ulu un- unc une unh unk unl unn uno unp uns unt unu uoc uoe uok uol uon uoo uop uos uot up- upc upe uph upk upn upo upp ups upt upu usc use ush usk usl usn uso usp uss ust usu utc ute uth utk utl utn uto utp uts utt utu uuc uue uun uus uut uuu