loom

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// G1
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// David Pager, Xin Chen 
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// The Lane Table Method Of Constructing LR(1) Parsers
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// https://www.researchgate.net/publication/266006409_The_Lane_Table_Method_Of_Constructing_LR1_Parsers
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E 	= "a" X "d"
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  	| "b" X "c"
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  	| "b" Y "d"
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	;
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X 	= "e" X
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  	| "e"
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	;
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Y 	= "e" Y
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  	| "e"
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	;
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