>D
 R ,----------/DD
 U>>.++++++++++L
D.++++++++++    L   
R<</D>R>,D          
U   LD   L          
 D   L           R-----------------/U D
 R----------/D<.DU----------------.+>>L<.L
             R-- --------------------   /UD
U               LD                        L
      U     >>.<L