1Element #0 20: 8 14 9 18 0 19 11 16 12 1 2 3 3Element #1 40: 9 15 10 19 4 20 12 17 13 5 6 7 5========= Face restriction; marker: 4 ======== 6num_elem: 1, elem_size: 3, num_dof: 21 70: 11 18 8 8========= Face restriction; marker: 2 ======== 9num_elem: 1, elem_size: 3, num_dof: 21 100: 10 20 13 11========= Face restriction; marker: 1 ======== 12num_elem: 2, elem_size: 3, num_dof: 21 130: 8 14 9 140: 9 15 10 15========= Face restriction; marker: 3 ======== 16num_elem: 2, elem_size: 3, num_dof: 21 170: 12 16 11 180: 13 17 12 19