D3,D4,D1. Ofc that is if the opponent isnt +f with the moves he uses.U4 is very slow and can be poked out on reaction in close range. It is extremely risky in the corner cause the opponent will be invited for a free corner combo. Also you can be crossed up and be punished with a full combo as well. Best defence when in corner imo are his pokes. Ermac's d4 and d3 are two of the best in the game imo. Other than that you just have to be patient. IAB is a good thought but it requires extreme timing and execution.