repeat()
{
     forward(1)
     if(frontIsWhite())
     {
         forward(1)
         right
         repeatwhile(frontIsWhite())
         {
             forward(1)

             if(frontisblack())
             {
                 forward(1)
                 left
                 repeatwhile(frontisclear())
                 {
                     forward(1)
                 }
             }
         }

         pickup
         end
     }

}