rok rol ron roo ror ros rot rra rrf rrg rri rrk rrl rrn rrr rrs rrt rsa rsf rsg rsi rsk rsl rsn rso rsr rss rst rta rtf rtg rti rtk rtl rtn rto rtr rts rtt saa saf sag sai sak sal san sao sar sas sat sfa sff sfg sfi sfk sfl sfn sfo sfr sfs sft sga sgf sgg sgi sgk sgl sgn sgo sgr sgs sgt sia sif sig sii sik sil sin sio sir sis sit sk- ska skf skg ski skk skl sko skr sks skt sla slf slg sli slk sll sln slo slr sls slt sna snf sng sni snk snl snn sno snr sns snt soa sof sog soi sok sol son soo sor sos sot sr- sra srf srg sri srk srl srn sro srr srs srt ss- ssa ssf ssg ssi ssk ssl ssn sso ssr sss sst sta stf stg sti stk stl stn sto str sts stt taa taf tag tai tak tal tan tao tar tas tat tfa tff tfg tfi tfk tfl tfn tfo tfr tfs tft tga tgf tgg tgi tgk tgl tgn tgo tgr tgs tgt tia tif tig tii tik til tin tio tir tis tit tka tkg tkk tkl tko tkr tks tkt tla tlf tlg tli tlk tll tln tlo tlr tls tlt tna tnf tng tni tnk tnl tnn tno tnr tns tnt to- toa tof tog toi tok tol ton too tor tos tot tra trf trg tri trk trl trn tro trr trs trt tsa tsf tsg tsi tsk tsl tsn tso tsr tss tst tta ttf ttg tti ttk ttl ttn tto ttr tts ttt