Which songs are easy to adapt and write lyrics?

Some songs are easy to adapt and write lyrics, such as:

* Jane Zhang's song "Wrong is wrong", "Love is love", "Bookmark", "Together" and "Forever".

* A Niu's song Peach Blossom.

* Richie Jen's song "Too Soft-hearted".

* Mao Amin's song "Missing".

* Andy Lau's song "Forgotten Water".

* Lin Yilun's song love birds.

* Gao Linsheng's song "I care about you".

* Yin's songs "It doesn't rain, it doesn't wind, it's sunny" and "The Love of a Tracker".

* Liu Huan's song "The Curved Moon".

The above songs are simple in structure and easy to adapt and write lyrics. However, it should be noted that the adaptation of lyrics needs to consider copyright issues to ensure legal compliance.