rrr rrs rrt rsr rss rst rsx rtr rts rtt rtx rty rxr rxs ry- ryr rys ryy sr- srr srs srt srx sry ss- ssr sss sst ssx str sts stt stx sty sxs sxt sy- syr sys syt syx t-x trr trs trt trx try tsr tss tst tsx tsy ttr tts ttt ttx tty txs txt tyr tys tyt xrt xrx xry xss xst xtr xts xtx xty xxx xxy xyr xyy yrs yrt ysr yss yst ysy ytr yts ytt yxy yys yyt yyy

rrrr rsts rtss rtts rysy rytt ryyt srtr ssrs ssss ssts strs stry stss sttr styr stys styx syrs syrt syry syss syst sytt syxt trst trtr try- trys tssr tsst tsts tsys ttss tttt ttys txtr tyr- tyrr tyss tyst tytt tyty tyxt xtry xtsr xxxx xxxy xyr- xyst yyyy

ryyty sssss strrs syrts systs tryst tryys tsyrt ttttt xysts y-str

trysts trysty trytry xxyyxx

sssssss xxxxxxx

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