Turtles moving in a pattern (Netlogo)

Good afternoon, I'm trying to make my turtles to move between a set of 4 blue patches. I can make them get to those patches but after that they just stay there, and what I need is to them continuously move (in order) to the next blue patch to their right. I don't know how to do it.

This is the section of the code I'm talking about:

to move-turtles

    ask turtles 
      [while [[pcolor] of patch-here != blue]
         [
           face min-one-of patches with [pcolor = blue ] [ distance myself ]
           forward 1
         ]
      ]  
    tick
    end

By advance, thank you!