static int runTestCase(int casenum__) {
		switch (casenum__) {
		case 0: {
			String A = "DD";
			String B = "FF";
			int expected__ = 0;

			return verifyCase(casenum__, expected__, new ConvertibleStrings().leastRemovals(A, B));
		}
		case 1: {
			String A = "AAAA";
			String B = "ABCD";
			int expected__ = 3;

			return verifyCase(casenum__, expected__, new ConvertibleStrings().leastRemovals(A, B));
		}
		case 2: {
			String A = "AAIAIA";
			String B = "BCDBEE";
			int expected__ = 3;

			return verifyCase(casenum__, expected__, new ConvertibleStrings().leastRemovals(A, B));
		}
		case 3: {
			String A = "ABACDCECDCDAAABBFBEHBDFDDHHD";
			String B = "GBGCDCECDCHAAIBBFHEBBDFHHHHE";
			int expected__ = 9;

			return verifyCase(casenum__, expected__, new ConvertibleStrings().leastRemovals(A, B));
		}

		// custom cases

		case 4: {
			String A = "AA";
			String B = "AA";
			int expected__ = 0;

			return verifyCase(casenum__, expected__, new
					ConvertibleStrings().leastRemovals(A, B));
		}
		/*
		 * case 5: {
		 * String A = ;
		 * String B = ;
		 * int expected__ = ;
		 * 
		 * return verifyCase(casenum__, expected__, new
		 * ConvertibleStrings().leastRemovals(A, B));
		 * }
		 */
		/*
		 * case 6: {
		 * String A = ;
		 * String B = ;
		 * int expected__ = ;
		 * 
		 * return verifyCase(casenum__, expected__, new
		 * ConvertibleStrings().leastRemovals(A, B));
		 * }
		 */
		default:
			return -1;
		}
	}