rni rnn rnp rnr rns rnt rpc rpe rpf rpi rpk rpl rpn rpp rpr rps rpt rrc rrf rri rrk rrl rrn rrp rrr rrs rrt rsc rse rsf rsi rsk rsl rsn rsp rsr rss rst rtc rte rtf rti rtk rtl rtn rtp rtr rts rtt scc sce scf sci sck scl scn scp scr scs sct se- sec see sef sei sek sel sen sep ser ses set sfc sfe sff sfi sfk sfl sfn sfp sfr sfs sft sic sie sif sii sik sil sin sip sir sis sit sk- skc ske skf ski skk skl skp skr sks skt slc sle slf sli slk sll sln slp slr sls slt snc sne snf sni snk snl snn snp snr sns snt spc spe spf spi spk spl spn spp spr sps spt sr- src sre srf sri srk srl srn srp srr srs srt ss- ssc sse ssf ssi ssk ssl ssn ssp ssr sss sst stc ste stf sti stk stl stn stp str sts stt tcc tce tcf tci tck tcl tcn tcp tcr tcs tct te- tec tee tef tei tek tel ten tep ter tes tet tfc tfe tff tfi tfk tfl tfn tfp tfr tfs tft tic tie tif tii tik til tin tip tir tis tit tkc tke tkk tkl tkp tkr tks tkt tlc tle tlf tli tlk tll tln tlp tlr tls tlt tnc tne tnf tni tnk tnl tnn tnp tnr tns tnt tpc tpe tpf tpi tpk tpl tpn tpp tpr tps tpt trc tre trf tri trk trl trn trp trr trs trt tsc tse tsf tsi tsk tsl tsn tsp tsr tss tst ttc tte ttf tti ttk ttl ttn ttp ttr tts ttt