on-restart-benchmarks/software/mza/tests/unit/evaluation/minizinc/general/test_concat3.mzn

array[1..4] of string: a = ["A", "B", "C", "D"];
string: s = concat([a[4], a[2], a[3], a[1]]);
constraint s = "DBCA";
solve satisfy;
output ["Ok\n"];