Add lines to this grid so as to make a single closed path that touches every dot.
* Lines must be perfectly vertical or horizontal.
* Lines must begin at a dot and end at a different dot.
* For clarity, "single closed path" means a path forming a single uninterrupted line without beginning or end.
* Your path must include the lines already marked on the grid.
* Lines must be perfectly vertical or horizontal.
* Lines must begin at a dot and end at a different dot.
* For clarity, "single closed path" means a path forming a single uninterrupted line without beginning or end.
* Your path must include the lines already marked on the grid.
