Identify the silent letters in words, watch, would, Christmas, design, biscuit, foreigner,wedge, talk, writing, sword, wrote,column, knickers, knuckle and hustle?

The silent letters in the words are:

- watch (w)
- would (w)
- Christmas (t)
- design (g)
- biscuit (u)
- foreigner (g)
- wedge (d)
- talk (l)
- writing (w)
- sword (w)
- wrote (w)
- column (n)
- knickers (k)
- knuckle (k)
- hustle (h)