$ vsubseqselect -minlength 30 -maxlength 40 -snum 5 atEST
agtttacttttctctcttcttgttttctgtgttggaag
tccttactgacttagtcatactcttctcaatc
cccattttatttcctctcaaatgctttccgtagt
atagtaagtaaaattgaactactgttattgagtt
gtttcttgtgtttgtgcttacgatactttcctc
# 1 subsequences of length 32
# 1 subsequences of length 33
# 2 subsequences of length 34
# 1 subsequences of length 38
