Easy:
pie - eip
lock - kcol
key - yek
seat - taes
sea - aes
Medium:
plate - aplte
dog - odg
race - aecr
house - euhos
wind - dinw
Hard:
window - idnoww
microcomputer - ecomrtupircom
nanodrone - dnonerano
terminal - metarnli
shipping - pshpiign