So for the lagging strand so let's designate it using our red color. This end is the five end and this end is the three end. So we see going this way we form the five to three end and this we form the five to three end. And that makes sense because DNA polymerase can only form the new strands in the five to three direction. And each one of these individual fragments, individual pieces, are known as the okasagi fragments. So once again for the leading strand, for this strand here, the DNA polymerase uses the primer to initiate replication.