(apply_cnot_l0_l1_i4 p1 p13)
(apply_cnot_l2_l3_i6 p12 p2)
(apply_cnot_l2_l3_i9 p12 p2)
(apply_cnot_l1_l2_i10 p13 p12)
(apply_cnot_l3_l0_i11 p2 p1)
(apply_cnot_l0_l1_i12 p1 p13)
(apply_cnot_l0_l1_i15 p1 p13)
(apply_cnot_l2_l3_i16 p12 p2)
(apply_cnot_l2_l3_i19 p12 p2)
(apply_cnot_l3_l0_i21 p2 p1)
; cost = 10 (unit cost)
