Gwoyeu Romatzyh
Both Gwoyeu Romatzyh and Simplified Wade use tonal spelling, but in two very different fashions. In Gwoyeu Romatzyh, the spelling of the tone and the spelling of the final often fuse together: WG "-iao" has the basic spelling "-iau" in GR, which becomes "-yau" in the 2nd tone, "-eau" in the 3rd tone, "-iaw" in the 4th tone, and remains "-iau" in the 1st tone – hence WG "chiao1", "chiao2", "chiao3", "chiao4" become GR "jiau", "jyau", "jeau", "jiaw". There are different rules for different cases: WG "pin1", "pin2", "pin3", "pin4" become GR "pin", "pyn", "piin", "pinn", but WG "sui1", "sui2", "sui3", "sui4" become GR "suei", "swei", "soei", "suey".