EDIT U+E707 A published private use of this character is for LATIN SMALL LIGATURE CT, which character is not included in regular Unicode. Certainly, such a ligature can be represented in regular Unicode using letters c and t with the U+200D ZERO WIDTH JOINER character between them, yet this Private Use Area codepoint for the whole ligature can be useful in some circumstances.

 WJGO  :  WJGO