/ ________________________________________________ \ / ________________________________________________ \ / ________________________________________________ \
| / ______________________ | | / ______________________ | | / ______________________ |
| / / 2 | | / / 2 | | / / 2 |
| / / / 2 3\ | | / / / 2 3\ | | / / / 2 3\ |
| / / | 729*y 729*y | | | / / | 729*y 729*y | | | / / | 729*y 729*y | |
| / / |- ------ + ------| 2 3 / ___\| | / / |- ------ + ------| 2 3 / ___\| | / / |- ------ + ------| 2 3 |
| / \/ \ 125 125 / 729*y 729*y | 1 I*\/ 3 || | / \/ \ 125 125 / 729*y 729*y | 1 I*\/ 3 || | / \/ \ 125 125 / 729*y 729*y |
| 3 / ---------------------------- - ------ + ------ *|- - - -------|| | 3 / ---------------------------- - ------ + ------ *|- - + -------|| | 3 / ---------------------------- - ------ + ------ |
| 3*y \/ 2 250 250 \ 2 2 /| | 3*y \/ 2 250 250 \ 2 2 /| | \/ 2 250 250 3*y|
|x + - --- + -------------------------------------------------------------------------|*|x + - --- + -------------------------------------------------------------------------|*|x + --------------------------------------------------------- - ---|
\ 5 3 / \ 5 3 / \ 3 5 /