-2r,a1+a2,p1+2p2 = -2 [ r,a1,p1+2p + r,a2,p1+2p2 ]
= -2 [ r,a1,p1 + r,a1,2p2 + r,a2,p1 + r,a2,2p2 ]
= -2 [ a1,p1,r + 2a1,p2,r + a2,p1,r + 2a2,p2,r ]
= -2 [ 3 +2*3 +3 +2*3 ]
= -2 * 18 = -36
-2r,a1+a2,p1+2p2 = -2 [ r,a1,p1+2p + r,a2,p1+2p2 ]
= -2 [ r,a1,p1 + r,a1,2p2 + r,a2,p1 + r,a2,2p2 ]
= -2 [ a1,p1,r + 2a1,p2,r + a2,p1,r + 2a2,p2,r ]
= -2 [ 3 +2*3 +3 +2*3 ]
= -2 * 18 = -36