map 0x00-0x7F to U+0000

map 0xC2-0xDF,\
    0x80-0xBF to U+0080 using big-endian

map 0xE0-0xEC,\
    0x80-0xBF,\
    0x80-0xBF to U+0800 using big-endian

map 0xED,\
    0x80-0x9F,\
    0x80-0xBF to U+D000 using big-endian

map 0xED,\
    0xA0-0xAF,\
    0x80-0xBF,\
    0xED,\
    0xB0-0xBF,\
    0x80-0xBF to U+010000 using big-endian

map 0xEE-0xEF,\
    0x80-0xBF,\
    0x80-0xBF to U+E000 using big-endian

readonly map 0xF0-0xF3,\
             0x80-0xBF,\
             0x80-0xBF,\
             0x80-0xBF to U+010000 using big-endian

readonly map 0xF4,\
             0x80-0x8F,\
             0x80-0xBF,\
             0x80-0xBF to U+100000 using big-endian

map 0xF4,\
    0x90-0xBF,\
    0x80-0xBF,\
    0x80-0xBF to U+110000 using big-endian

map 0xF5-0xF7,\
    0x80-0xBF,\
    0x80-0xBF,\
    0x80-0xBF to U+140000 using big-endian

map 0xF8-0xFB,\
    0x80-0xBF,\
    0x80-0xBF,\
    0x80-0xBF,\
    0x80-0xBF to U+200000 using big-endian

map 0xFC-0xFD,\
    0x80-0xBF,\
    0x80-0xBF,\
    0x80-0xBF,\
    0x80-0xBF,\
    0x80-0xBF to U+04000000 using big-endian