How to trim polyT from the front

[ayash338]

In RNA-seq data, some reads have poly A at the end, some reads have poly T at the front.
How can I remove the polyT from the front of reads?

[sfchen]

Can you show me some reads here?

[ayash338]

Thank you for your reply.
The following sequences are from my fastq file.
TTTTTTTACCAAGGACAAGAATTACTGGTTCACATAAAACACAAGAGATCTGAAAACACACTTCAGAGGAACATAGCAGGAAAATCCTTTTTAGCGACTACAGCTAGTAGGATGCTTCACTGGAAATTGATAAAACAAGTGTTGCATCTTA
TTTTTTTCAGTGTCTTGTAGCATGTCTTCTTCAGATAATCTGAAAATTGTGACAGGGCTACCCAAATTGATGTTATGATGATTGTCTTCAGAGATATCTCTATTTTGACCTTCCGAATCTTCTTCTGAAAGCTCTAGGTTTCTTTCAAAAG
TTTTTTTGTGTATATAGACTTGCAGTTGCAAACCGAATTACATGCGTGGTGTCTCATAGACGTACAAATTCCACAGGCTGAGGCTTTCCTTTCTGCATCCAACCAAGCCCTGCGGTAATACATCTGGTCGACACGACAAAACCATGTTCAA
TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTATATATATCTTATATACTTTTTTAAAATTAAAAAAAAAAC
TTTTTTTTTTTTTTTTTTTTTTGGTGCAATGTTGGTTCTCTTTCTTTTAATTTTTACAAAGCTGGCAGCAGCATTCTTTAGCTATATACTTCTGTATGTAAAGTTGTAAAAAGTTTGGAGAAAAAAACTAGCATTGGTGACACAAAACTAT
TTTTTTTCCAGTCCAAAAAAAAAAATCCCATCACTCTTTCAATCGGAGTTGCAATGGTTCGCTCAGCACAGTAACTTGTAAGCAAGCAAACAGAACATCAATAGCCAAGACTTTAGCATACGGAACCAGTACGCACTCCTGATACACGCGA
TTTTTTTTTTTTTTTAGCAAGAATCAGACTTTAATGCATGACAGAATCAGATCTCCAATAAATAACACACCGCAGCATTTTACGTCTACATGCACAAAGGCAAAACACAAGAGAACGGCTTAACATCAGATGTCAAATGTTTTCCTACTCC
TTTTTTTTTTTTTTCATAAAATCTCTGTAGATCGATAATGCAAAGAAACTTCTTACCAAAAAAAATACTATTAGCTTATATTGTTCCAAAAATAACCTAAAGCCCTAGCTAGAGTCTAAAGTAACTCGATGCCTCCATCTACTAGTTGGAG

I don't know much about RAN-seq, but when the cDNA fragment contains poly A and the 1st cDNA is sequenced, the poly T is read at the head, right?
So I wish there is a command option which trim the polyT or polyX at the head.
Thanks in advance.