+---+
  |   |
  |
  |
  |
__+__

---------

  +---+
  |   |
  |
  |
  |
__+__
e
-e-----e-

  +---+
  |   |
  |   O
  |
  |
__+__
e, i
-e-----e-

  +---+
  |   |
  |   O
  |   |
  |
__+__
e, i, s
-e-----e-

  +---+
  |   |
  |   O
  |   |
  |
__+__
d, e, i, s
-e-----ed

  +---+
  |   |
  |   O
  |   |
  |
__+__
d, e, i, l, s
-el----ed

  +---+
  |   |
  |   O
  |   |
  |
__+__
a, d, e, i, l, s
-el--a-ed

  +---+
  |   |
  |   O
  |   |
  |
__+__
a, d, e, i, l, s, t
-el--ated

  +---+
  |   |
  |   O/
  |   |
  |
__+__
a, d, e, g, i, l, s, t
-el--ated

  +---+
  |   |
  |  \O/
  |   |
  |
__+__
a, d, e, g, i, l, s, t, v
-el--ated

  +---+
  |   |
  |  \O/
  |   |
  |  /
__+__
a, d, e, g, i, l, m, s, t, v
-el--ated

  +---+
  |   |
  |  \O/
  |   |
  |  /
__+__
a, c, d, e, g, i, l, m, s, t, v
-el-cated