rte rti rtj rtn rto rtp rtr rts rtt scc sce sch sci scj scn sco scp scr scs sct se- sec see seh sei sej sen seo sep ser ses set sh- shc she shh shi shn sho shp shr shs sht sic sie sih sii sij sin sio sip sir sis sit sjc sje sjh sji sjj sjp sjr sjs sjt snc sne sni snj snn sno snp snr sns snt soc soe soh soi soj son soo sop sor sos sot spc spe sph spi spn spo spp spr sps spt sr- src sre srh sri srj srn sro srp srr srs srt ss- ssc sse ssh ssi ssj ssn sso ssp ssr sss sst stc ste sth sti stj stn sto stp str sts stt tcc tce tch tci tcj tcn tco tcp tcr tcs tct te- tec tee teh tei tej ten teo tep ter tes tet th- thc the thh thi thn tho thp thr ths tht tic tie tih tii tin tio tip tir tis tit tjc tje tji tjo tjp tjr tjs tnc tne tnh tni tnn tno tnp tnr tns tnt to- toc toe toh toi toj ton too top tor tos tot tpc tpe tph tpi tpj tpn tpo tpp tpr tps tpt trc tre trh tri trn tro trp trr trs trt tsc tse tsh tsi tsj tsn tso tsp tsr tss tst ttc tte tth tti ttn tto ttp ttr tts ttt