SEQ_NAME: test1
SEQ: aaaa
SEQ_LEN: 4
---
SEQ_NAME: test2
SEQ: tttt
SEQ_LEN: 4
---
SEQ_NAME: test3
SEQ: cccc
SEQ_LEN: 4
---
SEQ_NAME: test4
SEQ: gggg
SEQ_LEN: 4
---
SEQ_NAME: test1
SEQ: aaaaXttttXccccXgggg
SEQ_LEN: 19
REC_TYPE: JOIN
---