Full code snippet

gistfile1.txt

$(document).ready(function() {

	$("#multi").submit(function(e) {
		e.preventDefault();
		$("#output").empty();
		var array1 = [];
		var array2 = [];
		var array3 = [];
		$(".col1").each(function() {
			var word1 = $(this).val();
			if ( word1 !== "" ) {
				//word1 = word1.replace(/\s+/g, '');
				array1.push(word1);
			}
		});
		$(".col2").each(function() {
			var word2 = $(this).val();
			if ( word2 !== "" ) {
				//word2 = word2.replace(/\s+/g, '');
				array2.push(word2);
			}
		});
		$(".col3").each(function() {
			var word3 = $(this).val();
			if ( word3 !== "" ) {
				//word3 = word3.replace(/\s+/g, '');
				array3.push(word3);
			}
		});
		console.log(array1);
		console.log(array2);
		console.log(array3);
		var outData = [];
		var outPlus = [];
		$(array1).each(function( a, b ) {
			$(array2).each(function ( c, d ) {
				outData.push( b + " " + d );
				$(array3).each(function( e, f ) {
					outData.push( b + " " + d + " " + f );
				});
			});
		});

		console.log(outData);

		if ( $("input[name='bmm']").prop("checked") == true ) {
			$(outData).each(function( g, h ) {
				outPlus.push( h.split(" ") );
			});

			console.log(outPlus);

			$(outPlus).each(function( i, j ) {
			        var output = j.replace(/(^|\s)/g, '$1+');
			        console.log(j);
			    });
		}

		console.log(outPlus);
	});

});