\}$ and $B \in \{Y\}$, $A$ is d-separated from $B$ given $\{X_0,X_0\} \cup C$ for any $C \subset \{X_0,X_0,X_0,X_0,X_0,X_0,X_0,X_{00},X_{00},Y \}\setminus\{A,B\}$, or given $\{X_0,X_0,X_0\} \cup D$ for any $D \subset \{X_0,X_0,X_0,X_0,,X_0,X_{00}$ $,X_{00},Y \}\setminus\{A,B\}$.  -   For any nodes $A \in \{X_0,X_{00}, X_{00}\}$ and $B \in \{X_0\}$, $A$ is d-separated from $B$ given $\{X_0,X_0\} \cup C$ for any $C \subset \{X_0,X_0,X_0,X_0,X_{00},X_{00},Y \}\setminus\{A,B\}$, or given $\{X_0,X_0,X_0\} \cup D$ for any $D \subset \{X_0,X_0,X_{00},X_{00},Y \}\setminus\{A,B\}$.  -   For any nodes $A \in \{X_0,X_{00}, X_{00}\}$ and $B \in \{Y\}$, $A$ is d-separated from $B$ given $\{X_0,X_0\} \cup C$ for any $C \subset \{X_0,X_0,X_0,X_0,X_0,X_0,X_0,X_{00},X_{00},Y \}\setminus\{A,B\}$, or given $\{X_0,X_0,X_0\} \cup D$ for any $D \subset \{X_0,X_0,X_0,X_0,X_0,X_{00}$ $,X_{00},Y \}\setminus\{A,B\}$.  -   For any nodes $A