
doc:   [
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            DocChars("kwFdy")
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            DocChars("RF Vw2L3C8 6M4     hg"), DocGroup({"client": "d", "tag": "caret"}, []),
            DocChars("N4"), DocGroup({"tag": "caret", "client": "c"}, []),
            DocChars(" c1world! What\'s up with you?")
        ])
    ])
]

a_del: [
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        DelWithGroup([
            DelSkip(2), DelGroup([]),
            DelChars(2), DelGroup([])
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]
a_add: [
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        AddWithGroup([
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            AddChars("s"), AddSkip(2), AddChars("p"), AddGroup({"client": "a", "tag": "caret"}, [])
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]

b_del: [
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        DelWithGroup([
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            DelSkip(2), DelWithGroup([]),
            DelSkip(5)
        ]),
        DelWithGroup([
            DelWithGroup([]),
            DelSkip(21), DelWithGroup([]),
            DelSkip(1), DelChars(1)
        ])
    ])
]
b_add: [
    AddWithGroup([
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        AddSkip(2), AddWithGroup([]),
        AddSkip(5)
    ]),
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        AddWithGroup([]),
        AddSkip(21), AddWithGroup([]),
        AddSkip(1), AddChars(" ")
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]
