'Netlogo / set turtles away from walls

I am a NetLogo newbie. Am trying to place my turtles using the sexty command in random locations anywhere one patch away from the four walls of grid. So I assume this involves using min/max pxcor. My understanding is the default grid is -5 to 5 for both the x and y axes. I guess I want to define max-pxcor and max-pycor < 5 and min-pxcor and min-pycor > -5. Tried various command combinations but keep getting errors. Am I on the right track? Perhaps I should take a different approach?



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