As I am doing tutorial ,I get error message when entering element incidence. What am I doing wrong ?

STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 16-May-17
END JOB INFORMATION
INPUT WIDTH 79
***********************************************
*         STAAD.Pro Generated Comment         *
***********************************************
*REPEAT 3 2 0 0
*REPEAT ALL 3 0 0 2
*REPEAT ALL 1 0 3 0
***********************************************
UNIT METER KN
JOINT COORDINATES
1 0 0 0; 2 2 0 0; 3 4 0 0; 4 6 0 0; 5 0 0 2; 6 2 0 2; 7 4 0 2; 8 6 0 2;
9 0 0 4; 10 2 0 4; 11 4 0 4; 12 6 0 4; 13 0 0 6; 14 2 0 6; 15 4 0 6; 16 6 0 6;
17 0 3 0; 18 2 3 0; 19 4 3 0; 20 6 3 0; 21 0 3 2; 22 2 3 2; 23 4 3 2; 24 6 3 2;
25 0 3 4; 26 2 3 4; 27 4 3 4; 28 6 3 4; 29 0 3 6; 30 2 3 6; 31 4 3 6; 32 6 3 6;
***********************************************
*        STAAD.Pro Generated Comment         *
***********************************************
*REPEAT 3 1 1
*REPEAT ALL 3 4 4
*REPEAT 2 1 1
*REPEAT ALL 3 3 4
*REPEAT 3 1 1
*REPEAT ALL 2 4 4
************************************************
MEMBER INCIDENCES
1 1 17; 2 2 18; 3 3 19; 4 4 20; 5 5 21; 6 6 22; 7 7 23; 8 8 24; 9 9 25;
10 10 26; 11 11 27; 12 12 28; 13 13 29; 14 14 30; 15 15 31; 16 16 32; 17 17 18;
18 18 19; 19 19 20; 20 21 22; 21 22 23; 22 23 24; 23 25 26; 24 26 27; 25 27 28;
26 29 30; 27 30 31; 28 31 32; 29 17 21; 30 18 22; 31 19 23; 32 20 24; 33 21 25;
34 22 26; 35 23 27; 36 24 28; 37 25 29; 38 26 30; 39 27 31; 40 28 32
ELEMENT INCIDENCE
1 17 18 22 21 - software indicates as error message
2 18 19 23 22 - software indicates as error message
FINISH