error
6 
success
5 6 8 
success
3 5 7 8 9 
success
1 3 5 7 8 
success
1 3 5 7 8 
success
1 5 6 7 8 
error
1 5 6 7 8 
success
1 2 6 7 8 
error
1 2 6 7 8 
success
1 2 4 5 6 7 8