1
2
                      		 
3
/--+                               /--+
4
|AN| <-------------=-------------> |SN|
5
+--/		                   +--/
6
+---------------+     +---------------+
7
|cBLU 	        |     |cBLU 	      |
8
| H_IN 	        |     | H_IN 	      |
9
|               |     |               |
10
+---------------+     +---------------+
11
|cGRE  	        |     |cGRE  	      |
12
| L_IN 	        |     | L_IN 	      |
13
|    +----------+     +----------+    |
14
|    | cRED     |     | cRED     |    |
15
|    | L_INdown |<--->| L_INdown |    |
16
+----+----------+     +----------+----+
17
18