https://github.com/RobinHerbots/Inputmask V. 2

gistfile1.txt

	var $input = $('.input');
	
	$input.inputmask({
		regex: '([1-9]|10|11)',
		colorMask: true
	});

	$input.on('blur', function (event) {
			var $targetInput = $(event.target);
			var pastedValue = $targetInput.val();

			var isAlreadyExist = $.makeArray($(".input")).some(function(input) {
				var $input = $(input);

				if ($input.is($targetInput)) {
					return false;
				}

				return $input.val() === pastedValue;
			});

			if (isAlreadyExist) {
				$targetInput.val('');
			}
		});