SF.Snowball.Ext.EnglishStemmer.r_Step_4 C# (CSharp) Method

		private bool r_Step_4()
		{
			int among_var;
			int v_1;
			// (, line 129
			// [, line 130
			ket = cursor;
			// substring, line 130
			among_var = find_among_b(a_6, 18);
			if (among_var == 0)
			{
				return false;
			}
			// ], line 130
			bra = cursor;
			// call R2, line 130
			if (!r_R2())
			{
				return false;
			}
			switch (among_var)
			{
				
				case 0: 
					return false;
				
				case 1: 
					// (, line 133
					// delete, line 133
					slice_del();
					break;
				
				case 2: 
					// (, line 134
					// or, line 134
					do 
					{
						v_1 = limit - cursor;
						do 
						{
							// literal, line 134
							if (!(eq_s_b(1, "s")))
							{
								goto lab1_brk;
							}
							goto lab0_brk;
						}
						while (false);

lab1_brk: ;

						cursor = limit - v_1;
						// literal, line 134
						if (!(eq_s_b(1, "t")))
						{
							return false;
						}
					}
					while (false);

lab0_brk: ;

					// delete, line 134
					slice_del();
					break;
				}
			return true;
		}