[cal828]

R5

$5 Tri 8//2,6,7//2,6,7=$30

$5 Tri 2,6,7//8//2,6,7=$30

R7

$5 Tri 5//3,10,11//3,10,11=$30

$5 Tri 3,10,11//5//3,10,11=$30

R11

$2 Double 4,6//1,3,6,7,10,12=$24

$7 Double 4,6//1,6,7,12=$56