import sys
tiles = [[-1,  2 ,4, 8],
            [16, 32 , 64, 128 ],
            [256, 512, 1024, 2048],
            [ -1 , -1,  -1 , -1 ]]


def printDoubleLists(lists):
    for i in range(len(lists)):
        for j in range(len(lists[i])):
            sys.stdout.write(str(lists[i][j]))
            sys.stdout.write("\t")
        sys.stdout.write("\n")
        
printDoubleLists(tiles)