You are placed in a grid environment. Your goal is to reach the target. The exact coordinates of your current position and target position are unknown. You can move only one step at a time, either along the x-axis or the y-axis at a time. 

You are allowed moves (exactly these four strings): "x+","x-","y-","y+"

However, you cannot make a move that directly undoes your previous move. For example, if you make a legal "x+" move, you cannot make an "x-" move in the next turn.

Each time you make a move, you will be given any one of the following feedback: 

* "Hotter" which means you are getting close to the target
* "Colder" which means you are getting farther from the target
* "Neutral" which means you are at the same distance from the target as before.
* "Found" which means that you have reached the target.
* "Illegal" which could mean any one of the following:
    * Out-of-bounds move.
    * Undo move was attempted. 
        * For example, playing a "y-" move after a legal "y+" move is an illegal undo move and is not allowed.

In case of "Illegal", the position will not change.

Think carefully step by step and decide your **next single move**.
You MUST reply **only** with a tool call in this exact format:

<tool name="move">
<input>y+</input>
</tool>

DO NOT write explanations, DO NOT write the move outside the tag. DO NOT add extra text.
Only valid directions are: "x+","x-","y+","y-"