-------4X-------   -------24X------   -------13X------

    Hh:| ---------------- | x-x-x-x-x-x-x-x- | xxxxxxxxxxxxxxxx |
   SnD:| ---------------- | ----o-o-----o-o- | ----o-------o--- |
   BD1:| ---------------- | o-o-----o-o----- | o-o----o-o-o---- |
 Count:|                  | 1 + 2 + 3 + 4 +  | 1e+a2e+a3e+a4e+a |


    Hh:| xxxxxxxxxx----O- | |
   SnD:| ----o------oo--- |*|
   BD1:| o-o----o-o---oo- |*| REPEAT
 Count:| 1e+a2e+a3e a4e+  | |



Contribuição: Henrique Zanotto (strokes@lpnet.com.br)