R1:3-5-1-7
R2:7-13-6-10
R3:11-4-6-8
R4:13-14-8-4
R5:5-13-7-6
R6:8-3-2-5
R7:8-9-4-1
R8:3-1-2-5
R9:2-5-7-4
R10:12-2-3-9