rle rlf rlh rli rll rlo rlr rls rlt roa roe rof roh roi rok rol roo ror ros rot rra rrf rrh rri rrk rrl rrr rrs rrt rsa rse rsf rsh rsi rsk rsl rso rsr rss rst rta rte rtf rti rtk rtl rto rtr rts rtt saa sae saf sah sai sak sal sao sar sas sat se- sea see sef seh sei sek sel seo ser ses set sfa sfe sff sfh sfi sfk sfl sfo sfr sfs sft sh- sha she shf shh shi shk shl sho shr shs sht sia sie sif sih sii sik sil sio sir sis sit sk- ska ske skf skh ski skk skl sko skr sks skt sla sle slf slh sli slk sll slo slr sls slt soa soe sof soh soi sok sol soo sor sos sot sr- sra sre srf srh sri srk srl sro srr srs srt ss- ssa sse ssf ssh ssi ssk ssl sso ssr sss sst sta ste stf sth sti stk stl sto str sts stt taa tae taf tah tai tak tal tao tar tas tat te- tea tee tef teh tei tek tel teo ter tes tet tfa tfe tff tfh tfi tfk tfl tfo tfr tfs tft th- tha the thf thh thi thk thl tho thr ths tht tia tie tif tih tii tik til tio tir tis tit tka tke tkk tkl tko tkr tks tkt tla tle tlf tlh tli tlk tll tlo tlr tls tlt to- toa toe tof toh toi tok tol too tor tos tot tra tre trf trh tri trk trl tro trr trs trt tsa tse tsf tsh tsi tsk tsl tso tsr tss tst tta tte ttf tth tti ttk ttl tto ttr tts ttt