Clear this solution

Erse
Erst
Meet
Meets
Mere
Mete
Meters
Metes
Metre
Peer
Peers
Pert
Pest
Pester
Peter
Preset
Reset
Rest
Rete
Seem
Seep
Seer
Sere
Speer
Spree
Steep
Steer
Stem
Step
Teem
Tees
Temper
Term
Terse
Tree
Trees