G1 2 1 7 5 x_1
L1 1 3 L1
R1 2 0 R1
R3 3 1 R3
L2 0 3 L2
C1 5 3 C1
V1 5 0 step
E1 1 6 7 5 x_1 0
R2 6 5 R2
C2 7 5 C2
R4 6 7 R4