-  (print  
-    (map  
-      (fn[n d](nil?(some #((set %) \a)(partition d d "a" (range n))))) 
- 		[1 2 6 17 22 1 2 2 3 15] 
- 		[1 1 3 17 2 2 3 4 9 16] 
-    ) 
- ) 
-   
-  ;1,  1    truthy 
-  ;2,  1    truthy 
-  ;6,  3    truthy 
- ;17, 17    truthy 
- ;22,  2    truthy 
- ; 1,  2    falsy 
- ; 2,  3    falsy 
- ; 2,  4    falsy 
- ; 3,  9    falsy 
- ;15, 16    falsy 
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