$! 2 1
D x BOMB
C x a

$! 2 2
D x _. BOT
C x _._. BOT

$! 2 3
D x (_.PAC) y
C x a z

# qui mancano le proiezioni!!1!!!
$? 2 4
D x (_.  BOT) a a a a a a
C x (_._.BOT) a a a a a a

# qui mancano le `proiezioni`
$? 2.5
D x (y y)
C x BOMB z

$? 2.5'
D x (_. y y)
C x (_. BOMB) z

???????????????
D x a1 a2 a3
C y x a
C y (_._.BOMB)
C ?????????????
???????????????

$? 2.6
D x (_.      a) b cc dd ee
C x (_.      a) c cc dd ee
  x (_.      d) b cc dd ee
  x (_._._.BOT) b cc dd ee