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« **on:** August 12, 2005, 10:37:16 AM »
This game is diagrammed as follows:

C>B>A>I

D>E>F

G>

H>

The sequence of the first set of variables states C comes before B, B comes before A, and A comes before I.

The sequence of the second set of variables states D comes before E, E comes before F, and G and H come before F. All we know is the relationship before G and H and F. G and H come before F but we have no idea where they come in relationship to D and E. G and H could come first, second, third, as long as they come before F.

Now if B arrives before F we are left with the following sequence:

C>B>F

D>E>F

G has not set space as long as it comes before F.

H has not set space as long as it comes before F.

Therefore, C, D, G, and H can come first. E can never come first because D comes before E.

Does this make sense?