		@@ -82,65 +82,6 @@ /**

		/**
		* Lists all possible prefixes.
		* @param {Array} x source
		* @returns {Iterable<Array>} [prefix ...]
		*/
		function* prefixes(x) {
		for(var i=0, I=x.length; i<I; i++)
		yield x.slice(0, i);
		}

		/**
		* Lists all possible suffixes.
		* @param {Array} x source
		* @returns {Iterable<Array>} [suffix ...]
		*/
		function* suffixes(x) {
		for(var i=0, I=x.length; i<I; i++)
		yield x.slice(i);
		}

		/**
		* Lists all possible infixes.
		* @param {Array} x source
		* @returns {Iterable<Array>} [infix ...]
		*/
		function* infixes(x) {
		for(var i=0, I=x.length; i<I; i++) {
		for(var j=0; j<I; j++)
		yield x.slice(i, j);
		}
		}

		/**
		* Lists all possible partial sequences.
		* @param {Array} x source
		* @returns {Iterable<Array>} subsequence ...
		*/
		function* subsequences(x) {
		if(x.length===0) { yield []; return; }
		var y = x.slice(0, -1);
		for(var s of subsequences(y))
		yield s;
		for(var s of subsequences(y)) {
		s.push(x[x.length-1]);
		yield s;
		}
		}

		/**
		* Lists all possible arrangements.
		* @param {Array} x source
		* @returns {Iterable<Array>} permutation ...
		*/
		function* permutations(x) {
		if(x.length===0) { yield []; return; }
		for(var i=x.length-1; i>=0; i--) {
		var y = splice(x, i);
		for(var p of permutations(y)) {
		p.push(x[i]);
		yield p;
		}
		}
		}

		@@ -147,0 +88,0 @@

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