ris rit rkb rkc rke rkk rko rks rkt rnb rnc rnh rni rnn rno rnr rns rnt rob roc roe roh roi rok ron roo ror ros rot rrb rrc rrh rri rrk rrn rrr rrs rrt rsb rsc rse rsh rsi rsk rsn rso rsr rss rst rtb rtc rte rti rtk rtn rto rtr rts rtt sbb sbc sbe sbh sbi sbk sbn sbo sbr sbs sbt scb scc sce sch sci sck scn sco scr scs sct se- seb sec see seh sei sek sen seo ser ses set sh- shb shc she shh shi shk shn sho shr shs sht sib sic sie sih sii sik sin sio sir sis sit sk- skb skc ske skh ski skk sko skr sks skt snb snc sne sni snk snn sno snr sns snt sob soc soe soh soi sok son soo sor sos sot sr- srb src sre srh sri srk srn sro srr srs srt ss- ssb ssc sse ssh ssi ssk ssn sso ssr sss sst stb stc ste sth sti stk stn sto str sts stt tbb tbc tbe tbh tbi tbk tbn tbo tbr tbs tbt tcb tcc tce tch tci tck tcn tco tcr tcs tct te- teb tec tee teh tei tek ten teo ter tes tet th- thb thc the thh thi thk thn tho thr ths tht tib tic tie tih tii tik tin tio tir tis tit tkb tkc tke tkk tko tkr tks tkt tnb tnc tne tnh tni tnk tnn tno tnr tns tnt to- tob toc toe toh toi tok ton too tor tos tot trb trc tre trh tri trk trn tro trr trs trt tsb tsc tse tsh tsi tsk tsn tso tsr tss tst ttb ttc tte tth tti ttk ttn tto ttr tts ttt