improved code:repeat 10 [ repeat 2 [ lt 180 repeat 5 [ lt 72 repeat 5 [ setwidth 5 setcolor 1 fd 1 setcolor 2 fd 1 setcolor 3 fd 1 setcolor 4 fd 1 setcolor 5 fd 1 setcolor 6 fd 1 setcolor 10 fd 1 setcolor 11 fd 1 setcolor 13 fd 1 setcolor 14 fd 1 ] ] ] repeat 5 [ setwidth 5 setcolor 1 fd 1 setcolor 2 fd 1 setcolor 3 fd 1 setcolor 4 fd 1 setcolor 5 fd 1 setcolor 6 fd 1 setcolor 10 fd 1 setcolor 11 fd 1 setcolor 13 fd 1 setcolor 14 fd 1 ] ] penup home pendown rt 90 repeat 12 [ repeat 10 [ repeat 2 [ lt 180 repeat 5 [ lt 72 repeat 5 [ setwidth 5 setcolor 1 fd 1 setcolor 2 fd 1 setcolor 3 fd 1 setcolor 4 fd 1 setcolor 5 fd 1 setcolor 6 fd 1 setcolor 10 fd 1 setcolor 11 fd 1 setcolor 13 fd 1 setcolor 14 fd 1 ] ] ] ] repeat 5 [ setwidth 5 setcolor 1 fd 1 setcolor 2 fd 1 setcolor 3 fd 1 setcolor 4 fd 1 setcolor 5 fd 1 setcolor 6 fd 1 setcolor 10 fd 1 setcolor 11 fd 1 setcolor 13 fd 1 setcolor 14 fd 1 ] ] hideturtle