Gung'f snve. Gura V guvax, abg pbafvqrevat nal cnegvphyne cebtenzzvat ynathntr, gur nafjre qrcraqf ba ubj Frg qrgrezvarf rdhnyvgl bs ryrzragf. Vs vg hfrf fbzr vzcyrzragngvba bs rdhnyvgl/pbzcnevfba sbe glcr r gung pna fnl gung fbzr inyhrf bs glcr r ner rdhny gung ner arireguryrff qvfgvathvfunoyr, gura Frg vfa'g n shapgbe

Irel tbbq. V guvax gung'f gur rffrapr bs gur nafjre. Gur shapgbe ynjf unir na vzcyvpvg qrcraqrapl ba gur fhofgvghgvba cebcregl bs rdhnyvgl, juvpu thnenagrrf gung k = l vzcyvrf s(k) = s(l).

I hadn't heard of this property before, thanks for introducing me to it!

V gubhtug vg fbhaqrq fhecevfvat sbe n glcr r gb orunir guvf jnl jura V jebgr zl pbzzrag, ohg abj V ernyvfr gung vg zvtug or pbzzba va nal vzcyrzragngvba bs rdhnyf gung uvqrf vagreany fgngr, n fvzcyr rknzcyr orvat n frg/znc qngnglcr jubfr rdhnyvgl vzcyrzragngvba vtaberf vafregvba beqre ohg jubfr vgrengvba beqre qrcraqf ba vg.