multi4 = [["1 0 0 0"],["0 1 0 0"],["0 0 1 0"],["0 0 0 1"]]

for a in multi4[0]
    puts a
end
for b in multi4[1]
    puts b
end

for c in multi4[2]
    puts c
end

for d in multi4[3]
    puts d
end

puts "    "

multi4 = [["1 0 0 0"],["1 1 0 0"],["0 1 1 0"],["0 0 1 1"]]

for a in multi4[0]
    puts a
end
for b in multi4[1]
    puts b
end

for c in multi4[2]
    puts c
end

for d in multi4[3]
    puts d
end