mesh shown when edge is activated.
 

Dear all.
I wrote a code to write tecplot data with face connection data.
result data was readable but there are some unwanted lines for edge as shown in the attached file. The below is the ASCII data.
How can I remove these lines?
Thanks in advance.

-----------------------------------------------------------------------TITLE = "Grid"
VARIABLES = "x"
"y"
"rho"
ZONE T="zone 1"
STRANDID=0, SOLUTIONTIME=0
Nodes=18, Elements=21, ZONETYPE=FEQuadrilateral
DATAPACKING=BLOCK
VARLOCATION=([3]=CELLCENTERED)
FACENEIGHBORCONNECTIONS=57
FACENEIGHBORMODE=GLOBALONETOONE
FEFACENEIGHBORSCOMPLETE=YES
DT=(DOUBLE DOUBLE DOUBLE )
0.000000000E+000 1.000000000E-001 2.000000000E-001 3.000000000E-001 3.400000000E-001
3.800000000E-001 4.200000000E-001 3.150000000E-001 2.100000000E-001 1.050000000E-001
0.000000000E+000 0.000000000E+000 0.000000000E+000 9.309940555E-002 5.674912590E-002
5.751350166E-002 2.704415583E-001 1.872440909E-001
0.000000000E+000 0.000000000E+000 1.763269807E-002 3.526539614E-002 9.017693076E-002
1.450884654E-001 2.000000000E-001 2.000000000E-001 2.000000000E-001 2.000000000E-001
2.000000000E-001 1.333333333E-001 6.666666667E-002 9.775100118E-002 4.626335694E-002
1.551887973E-001 1.365664674E-001 1.097899835E-001
1.000000000E+000 1.000000000E+000 1.000000000E+000 1.000000000E+000 1.000000000E+000
1.000000000E+000 1.000000000E+000 1.000000000E+000 1.000000000E+000 1.000000000E+000
1.000000000E+000 1.000000000E+000 1.000000000E+000 1.000000000E+000 1.000000000E+000
1.000000000E+000 1.000000000E+000 1.000000000E+000 1.000000000E+000 1.000000000E+000
1.000000000E+000
14 13 15 15
8 6 7 7
16 11 12 12
15 1 2 2
17 6 8 8
17 8 9 9
4 17 18 18
4 5 17 17
18 10 14 14
14 3 18 18
13 14 12 12
14 2 3 3
14 10 16 16
18 3 4 4
18 9 10 10
17 5 6 6
18 17 9 9
16 10 11 11
14 16 12 12
15 13 1 1
14 15 2 2
1 1 0 11
1 2 0 20
1 3 0 21
2 1 0 5
2 2 2 9
3 1 0 18
3 3 0 19
4 1 0 20
4 3 0 21
5 1 0 16
5 2 0 2
5 3 0 6
6 1 0 5
6 3 0 17
7 1 0 8
7 2 0 17
7 3 0 14
7 4 0 14
8 1 2 1
8 2 0 16
8 3 0 7
9 1 0 15
9 2 0 13
9 3 0 10
9 4 0 10
10 1 0 12
10 2 0 14
10 3 0 9
10 4 0 9
11 1 0 1
11 2 0 19
12 1 0 21
12 3 0 10
13 1 0 9
13 2 0 18
13 3 0 19
14 1 0 10
14 3 0 7
14 4 0 7
15 1 0 17
15 3 0 9
16 1 0 8
16 2 2 5
16 3 0 5
17 1 0 7
17 2 0 6
17 3 0 15
18 1 0 13
18 3 0 3
19 1 0 13
19 2 0 3
19 3 0 11
20 1 0 1
20 3 0 4
21 1 0 1
21 2 0 4
21 3 0 12
-----------------------------------------------------------------------

For someone who has similar problems

I replaced below to FETriangle and emitted 4th repeated node number in cell conectivity lists

ZONETYPE=FEQuadrilateral