rer res ret ria ric rie rii rik ril rin rip rir ris rit rkc rke rkk rkp rks rkt rla rlc rle rli rll rln rlp rlr rls rlt rna rnc rni rnn rnp rnr rns rnt rpa rpc rpe rpi rpk rpl rpn rpp rpr rps rpt rra rrc rri rrk rrl rrn rrp rrr rrs rrt rsa rsc rse rsi rsk rsl rsn rsp rsr rss rst rta rtc rte rti rtk rtl rtn rtp rtr rts rtt saa sac sae sai sak sal san sap sar sas sat sca scc sce sci sck scl scn scp scr scs sct se- sea sec see sei sek sel sen sep ser ses set sia sic sie sii sik sil sin sip sir sis sit sk- ska skc ske ski skk skl skp skr sks skt sla slc sle sli slk sll sln slp slr sls slt sna snc sne sni snk snl snn snp snr sns snt spa spc spe spi spk spl spn spp spr sps spt sr- sra src sre sri srk srl srn srp srr srs srt ss- ssa ssc sse ssi ssk ssl ssn ssp ssr sss sst sta stc ste sti stk stl stn stp str sts stt taa tac tae tai tak tal tan tap tar tas tat tca tcc tce tci tck tcl tcn tcp tcr tcs tct te- tea tec tee tei tek tel ten tep ter tes tet tia tic tie tii tik til tin tip tir tis tit tka tkc tke tkk tkl tkp tkr tks tkt tla tlc tle tli tlk tll tln tlp tlr tls tlt tna tnc tne tni tnk tnl tnn tnp tnr tns tnt tpa tpc tpe tpi tpk tpl tpn tpp tpr tps tpt tra trc tre tri trk trl trn trp trr trs trt tsa tsc tse tsi tsk tsl tsn tsp tsr tss tst tta ttc tte tti ttk ttl ttn ttp ttr tts ttt