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// rows: 1 - Ion compact presentation, 2 - utf16, 3 - utf32, 4 - utf8
(
"\0"
"\u0000"
"\U00000000"
)
(
"\x7f"
"\u007f"
"\U0000007f"
""
)
(
"\xae"
"\u00ae"
"\U000000ae"
"®"
)
(
"\xff"
"\u00ff"
"\U000000ff"
"ÿ"
)
(
"\u0100"
"\u0100"
"\U00000100"
"Ā"
)
(
"\ud7ff"
"\ud7ff"
"\U0000d7ff"
""
)
// utf16 surrogate
(
"\U0010ffff"
"\udbff\udfff"
"\U0010ffff"
""
)
(
"\U00010000"
"\ud800\udc00"
"\U00010000"
"𐀀"
)