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Regex used: /^$RE{num}{real}\s+(\d+)\s+\.\.\s+(\d+)\s*/

>hsa_circ_0075116|chr5:175956288-175956388-|NM_014901|RNF44  FORWARD
-4.6      12 ..      35   xxxxGTGTGTGGTCT          GC TTCAGTGACTTCGAGG
+CGCG GC           AGCTGCTCCGAGTCC
-5.5      11 ..      36   xxxxxGTGTGTGGTC         TGC TTCAGTGACTTCGAGG
+CGCG GCA          GCTGCTCCGAGTCCT

Dumper:
$VAR1 = 'hsa_circ_0075116|chr5:175956288-175956388-|NM_014901|RNF44  F
+ORWARD';
...
            'end' => '36',
            'start' => '11'
          }

New regex: /^(\s+)?$RE{num}{real}\s+(\d+)\s+\.\.\s+(\d+)\s*/ 
 ## addition of (\s+)? to the beginning
*\s*-5      56 ..      70   CTATGCCCCTTATTG               TATCTG GGG C
+AGATG               ATCGTCAAGTGAAGA

$VAR125 = 'hsa_circ_0067224|chr3:128345575-128345675-|NM_002950|RPN1  
+FORWARD';
$VAR126 = [
...
              'end' => '6',
              'start' => undef
            }

#!/usr/bin/perl 
use strict;
...
    
}
print Dumper(%HoA_sequences);