1 by two

1 by two1 by two1 by two1 by two1 by two1 by two
1 by two1 by two1 by two1 by two1 by two1 by two
1 by two1 by two1 by two1 by two1 by two1 by two1 by two1 by two1 by two1 by two1 by two1 by two1 by two1 by two1 by two1 by two1 by two1 by two1 by two1 by two1 by two1 by two1 by two1 by two1 by two1 by two1 by two1 by two