theorem
  (H is atomic implies (not H is negative) & (not H is conjunctive) & (
not H is disjunctive) & (not H is next) & (not H is Until) & not H is Release )
& (H is negative implies (not H is atomic) & (not H is conjunctive) & (not H is
disjunctive) & (not H is next) & (not H is Until) & not H is Release ) & (H is
  conjunctive implies (not H is atomic) & (not H is negative) & (not H is
disjunctive) & (not H is next) & (not H is Until) & not H is Release ) & (H is
  disjunctive implies (not H is atomic) & (not H is negative) & (not H is
conjunctive) & (not H is next) & (not H is Until) & not H is Release ) & (H is
next implies (not H is atomic) & (not H is negative) & (not H is conjunctive) &
  (not H is disjunctive) & (not H is Until) & not H is Release ) & (H is Until
implies (not H is atomic) & (not H is negative) & (not H is conjunctive) & (not
  H is disjunctive) & (not H is next) & not H is Release ) & (H is Release
implies (not H is atomic) & (not H is negative) & (not H is conjunctive) & (not
H is disjunctive) & (not H is next) & not H is Until ) by Lm16,Lm17,Lm18,Lm19
