+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
|        |        |                                            |
+  +--+  +  +--+--+  +--+--+--+--+--+--+--+--+--+  +--+--+--+  +
|     |     |        |     |     |              |     |        |
+--+  +  +--+  +--+--+  +  +  +  +  +--+--+--+  +--+  +  +--+--+
|     |  |     |        |     |  |  LOST  |  |  |     |     |  |
+  +--+  +  +--+  +--+--+--+--+--+--+  +--+--+  +--+--+--+  +--+
|  |     |  |  |  |              |  | I|     |        |  |     |
+  +--+--+  +--+  +  +--+--+--+  +  + N+  +  +--+  +  +--+--+  +
|        |  |     |     |     |  |  |     |    L|  |           |
+  +--+  +  +  +--+--+  +--+  +  +--+--+--+--+ I+  +--+--+--+--+
|  |     |  |        |     |  |              | F|           |  |
+  +  +--+  +--+--+--+--+  +  +--+--+--+--+  + E+--+  +--+  +--+
|  |  |                    |              |  |     |  |  |     |
+  +  +  +--+--+--+--+--+--+--+  +--+--+  +- +--+  +  +  +--+  +
|  |        |     |                    |  |     |  |     |     |
+  +--+--+  +  +  +  +--+  +--+--+  +--+--+  +  +  +--+  +  +--+
|  |        |  |  |     |        |  |        |  |  |  |  |     |
+  +  +--+--+  +  +--+  +  +--+--+--+  +--+--+--+  +  +  +--+  +
|  |  |        |     |  |     |     |           |  |     |  |  |
+  +  +  +--+--+--+--+  +--+  +  +--+--+--+--+  +  +--+--+--+  +
|  |                       |  |     |  |  |     |  THEN  |  |  |
+  +  +--+--+--+--+--+--+--+--+--+  +--+--+  +--+--+--+  +--+  +
|  |        |     |  |        |  |  |  |              |  |     |
+--+--+--+  +  +  +  +  +--+  +--+  +--+  +--+  +--+--+  +  +--+
|     |     |  |  |  |  |  |        |  |  |     |     |  |     |
+  +--+  +--+  +  +  +  +--+--+--+--+--+  +  +--+  +  +  +--+--+
|           |  |  |  |                 |  |  |     |  |        |
+--+--+--+  +--+  +  +--+--+--+--+--+  +  +  +--+--+--+--+--+  +
BIRTH ->          |                 |     |           | DEATH ->
+-----+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+