Gets the sequence of corresponding positions in --visualize output

[zpinocchio]

I want to get the sequence of read_comparison_from_blast function result(star1 end1, star2,end2).
But I don't know how you join all the sequences together.
Is like that?

1.fna

seq1
AATC
seq2
ATGC

join together:
AATCATGC

and then chop to block, calculate