The document discusses silent letters in certain letter combinations. It notes that the k is silent in "kn" words like knee, the w is silent in "wr" words like write, the b is silent in "mb" words like lamb, and the g is sometimes silent in "gh" words like night. Examples of words demonstrating each silent letter combination are provided.

1. Phonics 5

2. Silent kn, wr,mb,and gh
 When the letters kn are together in a word,
the k is silent as in knee.
 When the letter wr are together in a word,
the w is silent as in write.
 When the letters mb are together in a
word, the b is silent as in lamb.
 When the letters gh are together in a word,
sometimes they are silent as night

3. knee
knock
knob
knight
 wrist
 wrestle
 wrong
 answer
 write
kn silent words: wr silent words:

4. comb
bomb
thumb
limb
sight
light
night
fight
knight
mb silent words: gh silent words: