static int runTestCase(int casenum) {
		switch (casenum) {
		case 0: {
			String S = "topcoderdivtwo";
			int expected__ = 2;

			return verifyCase(casenum, expected__, new AkariDaisukiDiv2().countTuples(S));
		}
		case 1: {
			String S = "foxciel";
			int expected__ = 0;

			return verifyCase(casenum, expected__, new AkariDaisukiDiv2().countTuples(S));
		}
		case 2: {
			String S = "magicalgirl";
			int expected__ = 4;

			return verifyCase(casenum, expected__, new AkariDaisukiDiv2().countTuples(S));
		}
		case 3: {
			String S = "waaiusushioakariusushiodaisuki";
			int expected__ = 75;

			return verifyCase(casenum, expected__, new AkariDaisukiDiv2().countTuples(S));
		}
		case 4: {
			String S = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
			int expected__ = 8924;

			return verifyCase(casenum, expected__, new AkariDaisukiDiv2().countTuples(S));
		}

		// custom cases

		/*
		 * case 5: {
		 * String S = ;
		 * int expected__ = ;
		 *
		 * return verifyCase(casenum, expected__, new
		 * AkariDaisukiDiv2().countTuples(S));
		 * }
		 */
		/*
		 * case 6: {
		 * String S = ;
		 * int expected__ = ;
		 *
		 * return verifyCase(casenum, expected__, new
		 * AkariDaisukiDiv2().countTuples(S));
		 * }
		 */
		/*
		 * case 7: {
		 * String S = ;
		 * int expected__ = ;
		 *
		 * return verifyCase(casenum, expected__, new
		 * AkariDaisukiDiv2().countTuples(S));
		 * }
		 */
		default:
			return -1;
		}
	}