Green, green, empty, brown, brown, brown.

1。 "Left 1 frog" jumps forward by 2 steps. Let "right 1 frog" jump to the original position of left 1.

3。 "Frog 2 on the right" took a step forward. "Left 1 frog" jumps to the original position of right 2.

(The current frog order is: green, green, brown, empty, brown, green, brown) Empty means there are no frogs on it)

5。 Let the "left frog" jump to the fourth stone head 6. Let "Frog Left 3" jump forward one grid.

(At present, the frog order is: empty green brown green brown green brown)

7。 "Right 1 frog" jumps to the first stone on the left.

8。 Frog 2 on the right jumps to the third stone on the left.

9。 "Frog 3 on the right" jumps on the fifth stone from the left.

(The order of frogs now is: brown, green, brown, green, brown, green and empty)

10。 "Left 1 frog" jumps one grid and sits on the rightmost stone.

1 1。 Frog 2 on the left jumps to Frog 3 on the right and sits on the second stone from the right.

The order of frogs now is: brown, green, brown, empty, brown, green, green.

12。 Let "Frog Left 3" jump on the middle stone.

13。 "Frog 2 on the right" jumps forward one grid.

(The order of frogs now is: brown, brown, empty, green, brown, green, green)

14。 "Frog 3 on the right" jumps on the third stone from the left.

15。 Finally, Frog Left 3 jumps one grid.

Above, you can pass the customs.