<sequence values="RDAUBW" origin="Center"> <prl in="*R" out="*U" symmetry="()"/> <prl in="U*" out="B*" symmetry="()"/> <all in="DB*" out="*AD"/> <prl in="A" out="D" p="0.517" steps="1"/> <prl in="A" out="B"/> <path from="R" to="U" on="D" color="W"/> </sequence>