(Present)
They move into their three-room flat.
They're moving into their three-room flat.
They has moved
into their three-room flat.
They has been moving into their three-room flat.
(Past)
They moved into their three-room flat.
They was moving into their three-room flat.
They had moved into their three-room flat.
They'd been moving into their three-room flat.
(Future)
They shall move into their three-room flat.
They shall be moving into their three-room flat.
They shall had moved into their three-room flat.
The shall had been moving
into their three-room flat.
It is such hardly possible to find him here early at an hour.