sep ser ses set seu sh- shc shd she shh shn sho shp shr shs sht shu snc snd sne snn sno snp snr sns snt snu soc sod soe soh son soo sop sor sos sot sou spc spd spe sph spn spo spp spr sps spt spu sr- src srd sre srh srn sro srp srr srs srt ss- ssc ssd sse ssh ssn sso ssp ssr sss sst ssu stc std ste sth stn sto stp str sts stt stu suc sud sue suh sun suo sup sur sus sut suu tcc tcd tce tch tcn tco tcp tcr tcs tct tcu tdc tdd tde tdh tdn tdo tdp tdr tds tdt tdu te- tec ted tee teh ten teo tep ter tes tet teu th- thc thd the thh thn tho thp thr ths tht thu tnc tnd tne tnh tnn tno tnp tnr tns tnt to- toc tod toe toh ton too top tor tos tot tou tpc tpd tpe tph tpn tpo tpp tpr tps tpt tpu trc trd tre trh trn tro trp trr trs trt tru tsc tsd tse tsh tsn tso tsp tsr tss tst tsu ttc ttd tte tth ttn tto ttp ttr tts ttt ttu tuc tud tue tuh tun tuo tup tur tus tut tuu ucc ucd uce uch ucn uco ucp ucr ucs uct ucu udc udd ude udn udo udp udr uds udt udu uec ued uee ueh uen uep uer ues uet uhc uhd uhe uhh uho uhp uhr uhs uht uhu un- unc und une unh unn uno unp unr uns unt unu uoc uod uoe uon uoo uop uor uos uot up- upc upd upe uph upn upo upp upr ups upt upu ur- urc urd ure urn uro urp urr urs urt uru usc usd use ush usn uso usp usr uss ust usu utc utd ute uth utn uto utp utr uts utt utu uuc uue uun uur uus uut uuu