sdp sdr sds sdt sdu sic sid sii sim sin sio sip sir sis sit siu smc smd smi smm smn smo smp smr sms smt smu snc snd sni snm snn sno snp snr sns snt snu soc sod soi som son soo sop sor sos sot sou spc spd spi spm spn spo spp spr sps spt spu sr- src srd sri srm srn sro srp srr srs srt ss- ssc ssd ssi ssm ssn sso ssp ssr sss sst ssu stc std sti stm stn sto stp str sts stt stu suc sud sui sum sun suo sup sur sus sut suu tcc tcd tci tcm tcn tco tcp tcr tcs tct tcu tdc tdd tdi tdm tdn tdo tdp tdr tds tdt tdu tic tid tii tim tin tio tip tir tis tit tiu tmc tmd tmi tmm tmn tmo tmp tmr tms tmt tmu tnc tnd tni tnm tnn tno tnp tnr tns tnt to- toc tod toi tom ton too top tor tos tot tou tpc tpd tpi tpm tpn tpo tpp tpr tps tpt tpu trc trd tri trm trn tro trp trr trs trt tru tsc tsd tsi tsm tsn tso tsp tsr tss tst tsu ttc ttd tti ttm ttn tto ttp ttr tts ttt ttu tuc tud tui tum tun tuo tup tur tus tut tuu ucc ucd uci ucm ucn uco ucp ucr ucs uct ucu udc udd udi udm udn udo udp udr uds udt udu uic uid uii uim uin uio uip uir uis uit uiu um- umc umd umi umm umn umo ump umr ums umt umu un- unc und uni unm unn uno unp unr uns unt unu uoc uod uom uon uoo uop uor uos uot up- upc upd upi upm upn upo upp upr ups upt upu ur- urc urd uri urm urn uro urp urr urs urt uru usc usd usi usm usn uso usp usr uss ust usu utc utd uti utm utn uto utp utr uts utt utu uuc uum uun uur uus uut uuu