24. When is P silent?
Initial before n, s, or t.
25. When is S silent?
In a few irregular words; as, isle, puisne, viscount, corps, etc.
26. When is T silent?
Before ch in the same syllable; also, in Christmas, eclat, mortgage, etc.
27. When is V silent?
In two words only—Sevennight and Twelvemonth.
28. When is W silent?
Before r in the same syllable also, in whoop, sword, two, etc.