Use pen and paper the assemble it.
If you are brave enough, you can try to assemble this set of reads:
CAGATGTCCT
GACCTTTTCT
TAAGATCTTT
TCTTTAGCCG
TTTCTTCTTT
GAGCTTTACT
TTACTTCATT
TCATTCACAT
CACATGAGCT
GTCCTGAACA
GAGCTGATCA
TCTTTCAGAT
AGCCGGACCT
TATGATCATT
TCATTAGGCG
AGGCGGAGCT
HINT: There is NO sequencing errors
HINT: Overlaps are at least of length 5