Nor do we seek God, unless He is first at work within us to lead us to do so. U stands for unconditional election . If sinners are as helpless in their depravity as the Bible says they are, unable to know and unwilling to seek God, then the only way they could possibly be saved is for God to take the initiative to change and save them. This is what election means. It is God choosing to save those, who apart from His sovereign choice and subsequent action, certainly would perish.
L stands for limited atonement .
The name is potentially misleading, for it seems to suggest that reformed people want to somehow restrict the value of Christ's death. This is not the case. The value of Jesus' death is infinite. The question rather is what is the purpose of Christ's death, and what He accomplished in it. Reformed theology stresses that Jesus actually atoned for the sins of those the Father has chosen.