R2 5-3-2-7-4 r3 4-1e-6-7-2 r4 8-1a-4-5-2 r5 1-9-2-8-12 r6 4-2-5-3-6 r7 1-3-5-4-2 r8 5-1-6-2-3 r9 7-3-1-6-4 good luck