Clear this solution

Deep
Deer
Derive
Devi
Dire
Dive
Diver
Dree
Drip
Drive
Eider
Eire
Ever
Peed
Peer
Peri
Pied
Pier
Pride
Pried
Rede
Reed
Reid
Ride
Ripe
Rive
Veep
Veer
Verdi
Vide
Vied
Vier
Viper