IF you were born on the 1st, 10th, 19th, 28thof any month you are number 1 .
If you were born on the 2nd, 11th, 20th, 29th of any month then you are number 2 .
If you were born on the 3rd, 12th, 21st, 30th of any month then you are number 3 .
If you were born on the 4th, 13th, 22nd, 31st of...