The regions are listed in order of their lengths in the following format:
length_of_the_common_region  sequence_of_the_region
sequence_name   number_of_occurrence: start_site(s)_of_the_common_region
sequence_name   number_of_occurrence: start_site(s)_of_the_common_region
sequence_name   number_of_occurrence: start_site(s)_of_the_common_region
...
Example output:
   10 GGAGGAGGAG
HSTFE3       3:    957   960  1256
HSTFAP       1:    813
S77532       1:    575
HUMIMENBPA   1:    900
HSTAL1AA     1:    515
RNCMYC       0:
CHKMAX       0:
    9 GAGGAGGAG
HSTFE3       4:    778   958   961  1257
HSTFAP       1:    814
S77532       1:    576
HUMIMENBPA   1:    901
HSTAL1AA     1:    516
RNCMYC       1:   6495
CHKMAX       0:
    9 GGAGGAGGA
HSTFE3       3:    957   960  1256
HSTFAP       1:    813
S77532       1:    575
HUMIMENBPA   1:    900
HSTAL1AA     1:    515
RNCMYC       0:
CHKMAX       2:   1481  1550
    8 CAGCTCCC
HSTFE3       1:    250
HSTFAP       0:
S77532       1:    116
HUMIMENBPA   1:   1271
HSTAL1AA     1:    653
RNCMYC       0:
CHKMAX       1:   1885
    8 CCAGCTGC
HSTFE3       0:
HSTFAP       0:
S77532       1:    440
HUMIMENBPA   1:    189
HSTAL1AA     1:    643
RNCMYC       1:   6119
CHKMAX       2:    175  4422
    8 AGGAGGAG
HSTFE3       5:    779   959   962  1255  1258
HSTFAP       1:    815
S77532       1:    577
HUMIMENBPA   1:    902
HSTAL1AA     2:    514   517
RNCMYC       1:   6496
CHKMAX       1:   2262
...