

~(~A|B) | A
~(~(~(~A|B))) | A
~(~(~(~A|B)|F)) | A
~(~(~(~A|B)|~(~B|B))) | A
~(~(~(~A )|~(~B ))|B) | A
~(~( ~~A | ~~B )|B) | A
~(~( A | B )|B) | A
~(~( ~(~( A | B )|B) | A ))
~(~( ~(~( A | B )|B) | A )|F)
~(~( ~(~( A | B )|B) | A )|~(~A|A))
~(~( ~(~( A | B ) |B) )|~(~A )) | A
~( ~~(~( A|B ) |B) | ~~A ) | A
~( ~( A|B ) |B | A ) | A
~( ~( A|B ) | ( B|A ) ) | A
F | A
A