[cal828]

R9

$1 Tri 7//2,3,5,9//2,3,5,9=$12

$6 Tri 5,7//5,7//2,3,9=$36

R11

$1 Tri 7//3,5,8,9//3,5,8,9=$12

$1 Tri 3,5,8,9//7//3,5,8,9=$12

R12

$1 Tri 9//1,3,5,6//1,3,5,6=$12

$1 Tri 1,3,5,6//9//1,3,5,6=$12

$1 Tri 5,9//5,9//1,3=$4