switch(id) {
  case ONE:
    if(someConditional) {
      startA();
    }
    else if(someOtherConditional) {
      startB();
    }
  break;
  case TWO:
    if(someConditional) {
      startC();
    }
    else if(someOtherConditional) {
      startD();
    }
  break;
  case THREE:
    if(someConditional) {
      startE();
    }
    else if(someOtherConditional) {
      startF();
    }
  break;
  case FOUR:
    if(someConditional) {
      startG();
    }
    else if(someOtherConditional) {
      startH();
    }
  break;
  }