rks rkt rla rle rlf rli rll rln rlo rlr rls rlt rna rni rnn rno rnr rns rnt roa roe rof roi rok rol ron roo ror ros rot rra rrf rri rrk rrl rrn rrr rrs rrt rsa rse rsf rsi rsk rsl rsn rso rsr rss rst rta rte rtf rti rtk rtl rtn rto rtr rts rtt saa sae saf sai sak sal san sao sar sas sat se- sea see sef sei sek sel sen seo ser ses set sfa sfe sff sfi sfk sfl sfn sfo sfr sfs sft sia sie sif sii sik sil sin sio sir sis sit sk- ska ske skf ski skk skl sko skr sks skt sla sle slf sli slk sll sln slo slr sls slt sna sne snf sni snk snl snn sno snr sns snt soa soe sof soi sok sol son soo sor sos sot sr- sra sre srf sri srk srl srn sro srr srs srt ss- ssa sse ssf ssi ssk ssl ssn sso ssr sss sst sta ste stf sti stk stl stn sto str sts stt taa tae taf tai tak tal tan tao tar tas tat te- tea tee tef tei tek tel ten teo ter tes tet tfa tfe tff tfi tfk tfl tfn tfo tfr tfs tft tia tie tif tii tik til tin tio tir tis tit tka tke tkk tkl tko tkr tks tkt tla tle tlf tli tlk tll tln tlo tlr tls tlt tna tne tnf tni tnk tnl tnn tno tnr tns tnt to- toa toe tof toi tok tol ton too tor tos tot tra tre trf tri trk trl trn tro trr trs trt tsa tse tsf tsi tsk tsl tsn tso tsr tss tst tta tte ttf tti ttk ttl ttn tto ttr tts ttt