Related papers: cond-mat/9806011

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This paper has been withdrawn by the authors pending corrections.

This paper has been withdrawn by the author; see the much expanded, improved, and generalized version at arXiv:0811.2080.

This paper has been withdrawn by the authors because the paper is largely revised and improved, and to appear in Mechanics Research Communications.

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This paper has been withdrawn by the author(s) in the light of several other works available and due to a misunderstanding in the authorships.

The paper was withdrawn by the author. Further research is needed.

This paper has been withdrawn. The results are now part of math.GR/9804072.

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This paper has been withdrawn by the author, due to a crucial error in page 5.

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This paper has been withdrawn by the author due to extremely unscientific errors.

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This manuscript has been withdrawn by the author. Some of the material has been included in the manuscript 'Dualizing the Dual Standard Model' hep-ph/0102084.

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This paper has been withdrawn since we combine this paper with math.AC/0503685. All contents of the paper have been moved to math.AC/0503685.