sii sin sio sip sir sis sit siu snc sng sni snn sno snp snr sns snt snu soc sog soh soi son soo sop sor sos sot sou spc spg sph spi spn spo spp spr sps spt spu sr- src srg srh sri srn sro srp srr srs srt ss- ssc ssg ssh ssi ssn sso ssp ssr sss sst ssu stc stg sth sti stn sto stp str sts stt stu suc sug suh sui sun suo sup sur sus sut suu tcc tcg tch tci tcn tco tcp tcr tcs tct tcu tgc tgg tgh tgi tgn tgo tgp tgr tgs tgt tgu th- thc thg thh thi thn tho thp thr ths tht thu tic tig tih tii tin tio tip tir tis tit tiu tnc tng tnh tni tnn tno tnp tnr tns tnt to- toc tog toh toi ton too top tor tos tot tou tpc tpg tph tpi tpn tpo tpp tpr tps tpt tpu trc trg trh tri trn tro trp trr trs trt tru tsc tsg tsh tsi tsn tso tsp tsr tss tst tsu ttc ttg tth tti ttn tto ttp ttr tts ttt ttu tuc tug tuh tui tun tuo tup tur tus tut tuu ucc ucg uch uci ucn uco ucp ucr ucs uct ucu ugc ugg ugh ugi ugn ugo ugp ugr ugs ugt ugu uhc uhh uhi uho uhp uhr uhs uht uhu uic uig uii uin uio uip uir uis uit uiu un- unc ung unh uni unn uno unp unr uns unt unu uoc uog uon uoo uop uor uos uot up- upc upg uph upi upn upo upp upr ups upt upu ur- urc urg uri urn uro urp urr urs urt uru usc usg ush usi usn uso usp usr uss ust usu utc uth uti utn uto utp utr uts utt utu uuc uug uun uur uus uut uuu