a b c d
  a. (2!)=(3!) (1!)=(3!)=(7l) (2!)=(2!)=(4!)=(5l) (1!)=(1g)=(3g)=(4l)=(5g)
  b.11 (1!)=(3!) (2!)=(3!)=(3!)=(4l)
  c. (1!)=(1!)=(3!)=(3!)=(5!)=(9l)/(1!)=(2!)=(6!)=(10l) (1!)=(2!)=(4!)=(9l) (1ge)=(1ge)=(1!) (2!)=(2!)/(1!)=(3!)=(4!)=(x36)
  d. (1!)=(3!)=(4!)=(9l)
  e f g
  e. (1!)=(2!) (1!)=(2!)/(1!)=(2!)=(3!)=(8l)
  f. (2!)=(3!)=(3!)=(7l) (2!)=(2!) (2!)=(2!)=(4l) (1!)=(2!)=(4!)=(7l)
  g.11 (1!)=(1!)=(3!)=(3!)=(5!)=[26lx] (1!)=(3!) (1!)=(2!)/(3!)=(8l) (1!)=(3!)=(5!) (2!)=(3!)

ChiEng
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