Modify the UNICODE character of the next letter?

Many unicode characters will modify the appearance of the previous character. Have a
modify the following characters?
No, unicode only supports modifiers after the protagonist. From definition D52 in Section 3.6, Combination of the 6.0.0 The specification begins:

  • The graphic positioning of a combining character depends on the
    last preceding base character, unless
    they are separated by a character that
    is neither a combining character nor
    either zero width joiner or zero width
    nonjoiner. The combining character is
    said to apply to that base character.
  • There may be no such base character, such as when a combining character is at the start of text or follows a control or format character—for example, a carriage return, tab, or right-left mark. In such cases, the combining characters are called isolated combining characters.

Many unicode characters will modify the appearance of the previous character. Is there one
modify the following characters?

No, unicode only supports modifiers after the protagonist. Starting from definition D52 in Section 3.6, Combination of the 6.0.0 specification:

  • The graphic positioning of a combining character depends on the
    last preceding base character, unless
    they are separated by a character that
    is neither a combining character nor
    either zero width joiner or zero width
    nonjoiner. The combining character is
    said to apply to that base character.
  • There may be no such base character, such as when a combining character is at the start of text or follows a control or format character—for example, a carriage return, tab, or right-left mark. In such cases, the combining characters are called isolated combining characters.
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