roe roh rok rol ron roo ror ros rot rrb rrc rrh rrk rrl rrn rrr rrs rrt rsb rsc rse rsh rsk rsl rsn rso rsr rss rst rtb rtc rte rtk rtl rtn rto rtr rts rtt sbb sbc sbe sbh sbk sbl sbn sbo sbr sbs sbt scb scc sce sch sck scl scn sco scr scs sct se- seb sec see seh sek sel sen seo ser ses set sh- shb shc she shh shk shl shn sho shr shs sht sk- skb skc ske skh skk skl sko skr sks skt slb slc sle slh slk sll sln slo slr sls slt snb snc sne snk snl snn sno snr sns snt sob soc soe soh sok sol son soo sor sos sot sr- srb src sre srh srk srl srn sro srr srs srt ss- ssb ssc sse ssh ssk ssl ssn sso ssr sss sst stb stc ste sth stk stl stn sto str sts stt tbb tbc tbe tbh tbk tbl tbn tbo tbr tbs tbt tcb tcc tce tch tck tcl tcn tco tcr tcs tct te- teb tec tee teh tek tel ten teo ter tes tet th- thb thc the thh thk thl thn tho thr ths tht tkb tkc tke tkk tkl tko tkr tks tkt tlc tle tlh tlk tll tln tlo tlr tls tlt tnb tnc tne tnh tnk tnl tnn tno tnr tns tnt to- tob toc toe toh tok tol ton too tor tos tot trb trc tre trh trk trl trn tro trr trs trt tsb tsc tse tsh tsk tsl tsn tso tsr tss tst ttb ttc tte tth ttk ttl ttn tto ttr tts ttt