function solve(arr) {
    var matrix = [];
    var seqLength = Number(arr[arr.length - 1]);
    for (var i = 0; i < arr.length - 1; i++) {
        var obj = arr[i].split(' ');
        matrix.push(obj);
    }
    var merged = [].concat.apply([], matrix);
    for (var i = 0; i < merged.length; i++) {
        var repeats = 1;
        for (var j = i + 1; j < i + seqLength; j++) {
            if (merged[i] === merged[j]) {
                repeats++;
            }
        }
        if (repeats === seqLength) {
            for (var j = i; j < i + seqLength; j++) {
                merged[j] = 'removed';
            }
        }
    }
    for (var i = 0; i < matrix.length; i++) {
        var row = merged.splice(0, matrix[i].length).filter(function (x) {
            return x !== 'removed';
        });
        if (row.length) {
            console.log(row.join(' '));
        }
        else {
            console.log('(empty)');
        }

    }
}
var arr = [ '3 3 3 2 5 9 9 9 9 1 2',
    '1 1 1 1 1 2 5 8 1 1 7',
    '7 7 1 2 3 5 7 4 4 1 2',
    '2' ];
arr = [ '1 2 3 3', '3 5 7 8', '3 2 2 1', '3' ];
arr = [ '2 1 1 1', '1 1 1', '3 7 3 3 1', '2' ];
arr = [ '1 2 3 3 2 1', '5 2 2 1 1 0', '3 3 1 3 3', '2' ];
solve(arr);