37012

I worked it out by putting all the zeros first like 0-0, 0-1 and so on , then putting the ones next: 1-1, 1-2 and so on, I did that until I got all of them put together.But I had to remember that there is only one 0-0, 0-1, 0-2 and till you get to 0-6, but you can switch the numbers round.There was 28 dominos all together.