- setup:
  cleanup:
  args:     XY  X   XXY
  input:
  output:   1
- setup:
  cleanup:
  args:     XY  Z   XYZ
  input:
  output:   1
- setup:
  cleanup:
  args:     XXY XXZ XXXXZY
  input:
  output:   1
- setup:
  cleanup:
  args:     YX  X   XXY
  input:
  output:   0