input=[21, 12, 11, 22]
after_units=[21, 11, 12, 22]
stable_tens=[11, 12, 21, 22]
reverse_ties_in_tens=[12, 11, 22, 21]
duplicates_as_value_original_index=[(11, 2), (12, 1), (12, 3), (21, 0)]
exhaustive_arrays=1365; invalid_inputs=7
PASS: numeric order, duplicate stability, empty input and fault witness
