Below Are Four Overlapping Reads from Sequencing

Short Answer

Below are four overlapping reads from sequencing.(Note: All reads are in the 5′-to-3′ direction.)
Read 1: TTACACGCCATCGACTGGATCATATATGC
Read 2: CATATATGCATGCAGCGCATGACCCCTAG
Read 3: AGTCTGCAAATGCTGCGATTACACGCCA
Read 4: CCCCTAGAGCTGGGGATCAGAGTCGATT
In the correct order, read 3 is the first sequence, followed by read _______.