ABCDEFGHIJKLMNOPQRSTUVWXYZAAABACADAEAFAGAHAIAJAKALAMANAOAP
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Stickers:BGROYWU Stickers:Y
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R Stickers:RMake a copy of the document, change the stickers, and the entire document will automatically update.
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F Stickers:B
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L Stickers:O
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B Stickers:G
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Recognition
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To recognize cases, find the F and R stickers. The orientations and permutations of the four F and R stickers of the corners cover all cases. The U stickers aren't checked.

This can also be thought of as sort of a three sticker system. You only need to know which of the two R stickers is on the corner with two stickers. There is no need to remember the F sticker location on the double sticker corner. Or the other way around of only remembering the location of the F sticker. This may help even more with tracking and prediction.

Any two adjacent sets of stickers can be used instead of always R and F. Red and blue are represented within the images of the document, but other stickers around the U layer may instead be used.
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Advanced
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Opposing stickers may also be incorporated into the recognition. For example, instead of finding the FUL sticker, the opposing BUL can also determine a case.
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Example Alternatives
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Below are some of the possible alternate patterns that can be used as part of six sticker recognition. This isn't a complete list, but a few of the many possible.
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LLLGLLLLLLLL
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LLLLRLLLLROLLLLLLLLR
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LLLLLLLLLLLLLLLLLLLL
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LLLLRLLLLRLLLLRLLLR
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BLBLLBBLBBLL
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Pseudo
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For pseudo, only a couple of rules need to be added. Stickers to search for change depending on the type of pseudo used.

For more detailed examples of how to incorporate pseudo, visit the recognition webpage.
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Other
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This recognition system is part of a larger system that allows for recognizing numerous other steps. Below is a link to my website containing alg documents for other steps such as CLL, EG, ZBLL, and early corner permutation methods such as CEOR.
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https://sites.google.com/site/athefre/other/straughan-recognition
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Credit
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Recognition by Michael James Straughan (Athefre)
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My Discord Server
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My Method Development Website