lay/lie (verb)

Example 1

to lay (the table)
to lay (an egg)

a) She is laying the table.
b) She was laying the table.
c) She lays the table.
d) She laid the table.
e) She has laid the table.

Example 2

to lie (down)

a) He is lying down.
b) He was lying down.
c) He lies down.
d) He lay down.
e) He has lain down.

Example 3

to (tell a) lie

a) They are lying.
b) They were lying.
c) They lie.
d) They lied.
e) They had lied.