- setup:
  cleanup:
  args:     ab   ad bd aaab baa badab
  input:
  output:   2
- setup:
  cleanup:
  args:     abc   a b c ab ac bc abc
  input:
  output:   7
- setup:
  cleanup:
  args:     cad   cc acd b ba bac bad ac d
  input:
  output:   4