+====+  +=======+             +=======+               +======-+  +====+
I R1 I  I  R10  +-------------+  R20  +---------------+  R30  I  I R4 I
I L2 +--+ L1/L2 I             I  L1   I               I L1/L2 +--+ L2 I
I    I  I       +          +--+       I  +------------+       I  I    I
+====+  ++====+=+          |  +===+===+  |            +=+==+=++  +====+
         |    |            |      |      |              |    |
         |    |            |      |      |  +-----------+    |
         |    +-------+    |      |      |  |                |
         |            |    |      |      |  |                |
         |            |    |      |      |  |                |
         |            |    |      |      |  |                |
+====+  ++=====-+     |    |  +===+===+--+  |         +======++  +====+
I R2 I  I  R11  I     |    |  I  R21  I     |         I  R31  I  I R5 I
I L2 +--+ L1/L2 +-------------+  L1   +---------------+ L1/L2 +--+ L2 I
I    I  I       I     |    |  I       I     | +-------+       I  I    I
+====+  ++=====-+     |    |  ++==+==++     | |       +======++  +====+
         |            |    |   |  |  |      | |              |
         | +---------------+   |  |  |      | |              |
         | |          |        |  |  |      | |              |
         | |  +----------------+  |  +-----------------+     |
         | |  |       |           |         | |        |     |
+====+  ++=+==+=+     +-------+===+===+-----+ |       ++=====++  +====+
I R3 I  I  R12  I             I  R22  I       |       +  R32  I  I R6 I
I L2 +--+ L1/L2 I             I  L1   +-------+       I L1/L2 +--+ L2 I
I    I  I       +-------------+       +---------------+       I  I    I
+====+  +=======+             +=======+               +=======+  +====+