#### Answer

35,152

#### Work Step by Step

The number of ways in which a series of successive things can occur is found by multiplying the number of ways in which each thing can occur.
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Ways of choosing the
1st letter: 2 (either a W or a K)
2nd letter: 26
3rd letter: 26
4th letter: 26
Total: 2$\times$26$\times$26$\times$26=35,152