Enter the 9-digit Canadian SIN number (all numeric) separated into 3 groups of 3 numbers
each. If unknown, enter “Unknown” in the appropriate space and enter the NH's father's name and mother's maiden name
in the appropriate spaces.
Enter the 11-digit Canadian OAS number (all numeric). The last 9 digits are the same
as the Canadian Social Insurance number. If unknown, enter “Unknown” in the appropriate space.