87 B 2200 Timing marks

The timing marks on my lower timing belt cover there are lines to a number 10 and lines to a T for TDC could someone please tell me which line is 6 degrees BTDC ,and from a standstill which mark do i line my bottom pulley, and top cam gear up with the cam gear has a 1 2 3 4 on it thanks

Cured my problem each mark is 2 degrees on the lower timing cover: the cam and timing belt pulley dowel sits in the #3 hole and lines up with the top mark mine is 6 degrees btdc though