cooking sushi combo

cup Uncooked Short-Grain White Rice
1 cup Water
¼ cup Rice Vinegar
1 tablespoon White Sugar
½ cup Imitation Crabmeat (finely chopped)
¼ cup Mayonnaise
8 sheets Nori (dry seaweed)
2 ½ tablespoons Sesame Seeds
1 Cucumber (cut into thin spears)
2 Avocados (pitted, peeled, and sliced the long way