Hopefully this is all self-explanatory.
There are two Rs in Library.
There is no X in Especially.
An event can be by accident, but not on accident.
Mines refer to plural earthly excavations for coal, copper, etc. not one’s ownership.
There’s no F in Birthday.
There is no B in Supposedly.
Nor is there an X in ask.
Moms suggests you have two.
There’s only one U in Nuclear.
An goes in front of words starting with a vowel sound, as in “an honest man.”
‘It’ is a singular pronoun without gender specification; ‘They’ is a plural pronoun.
There is no M in Valentine.
All and Anyway do not have an S at the end.
Irregardless is not a word.