$out=" "; my @text; while(<>) { chomp; @arr=split(/\s+/,$_); push @r,$arr[0]; push @e,join' ',($arr[0],$arr[2]); } print ''; print join ' ',@r; print ''; print"\n"; for my $a (@e) { @q=split(/\s/,$a); if($q[1]=~/^B-/) { $p=$'; $m=$q[0] if( $q[1] =~/^B-/ or $q[1]="o"); $out.="\n$p\n$m\n\n"; } } print"$out\n";