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## Keep
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### Instructions
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Using the `.slice` method again and the provided `alphabet` variable of a string
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of all the characters in an alphabet:
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- Declare a `keepFirst` variable of only the 6 first characters from `alphabet`.
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- Declare a `keepLast` variable of only the 7 last characters from `alphabet`.
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- Declare a `keepFirstLast` variable of the 3 first characters and 4 last
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characters from `alphabet`.
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> **Example:** if `alphabet` value is `'abcdefghijklmnopqrstuvwxyz'`
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>
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> - `keepFirst` must be `'abcdef'`
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> - `keepLast` must be `'tuvwxyz'`
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> - `keepFirstLast` must be `'abcwxyz'`
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### Notions
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- [Slice](https://devdocs.io/javascript/global_objects/string/slice)
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