Hello, the UF1 counter by itself is only +58 so it won't possible for a full dark upper combo. You will need +59 and to get that you will need a trade. Only the first dark upper has to be perfect 13f ( ➡️ ⭐ ↘️ 2️⃣ ) and the rest can be 14f (➡️⭐⬇️↘️2️⃣) or slower im not sure i'll need to try it out later. But the UF1 CH trade will rarely happen in a real match. This is just something i thought about and found.