ros rot rra rrf rrg rrk rrl rrn rrr rrs rrt rsa rse rsf rsg rsk rsl rsn rso rsr rss rst rta rte rtf rtg rtk rtl rtn rto rtr rts rtt saa sae saf sag sak sal san sao sar sas sat se- sea see sef seg sek sel sen seo ser ses set sfa sfe sff sfg sfk sfl sfn sfo sfr sfs sft sga sge sgf sgg sgk sgl sgn sgo sgr sgs sgt sk- ska ske skf skg skk skl sko skr sks skt sla sle slf slg slk sll sln slo slr sls slt sna sne snf sng snk snl snn sno snr sns snt soa soe sof sog sok sol son soo sor sos sot sr- sra sre srf srg srk srl srn sro srr srs srt ss- ssa sse ssf ssg ssk ssl ssn sso ssr sss sst sta ste stf stg stk stl stn sto str sts stt taa tae taf tag tak tal tan tao tar tas tat te- tea tee tef teg tek tel ten teo ter tes tet tfa tfe tff tfg tfk tfl tfn tfo tfr tfs tft tga tge tgf tgg tgk tgl tgn tgo tgr tgs tgt tka tke tkg tkk tkl tko tkr tks tkt tla tle tlf tlg tlk tll tln tlo tlr tls tlt tna tne tnf tng tnk tnl tnn tno tnr tns tnt to- toa toe tof tog tok tol ton too tor tos tot tra tre trf trg trk trl trn tro trr trs trt tsa tse tsf tsg tsk tsl tsn tso tsr tss tst tta tte ttf ttg ttk ttl ttn tto ttr tts ttt