<!-- A ---------------------------------------------------------------------->
<!-- $begin:A$ -->
Line A-1
Line A-2
Line A-3
<!-- $end:A$ -->

<!-- B ---------------------------------------------------------------------->
<!-- $begin:B$ -->
Line B-1
<!-- $begin:A$ -->
Line A-1
Line A-2
Line A-3
<!-- $end:A$ -->
Line B-2
<!-- $end:B$ -->

<!-- C ---------------------------------------------------------------------->
<!-- $begin:C$ -->
Line C-1
Line C-2
<!-- $begin:A$ -->
Line A-1
Line A-2
Line A-3
<!-- $end:A$ -->

<!-- $begin:CONTENTS$ -->
Line CX-1
Line CX-2
<!-- $end:CONTENTS$ -->

<!-- $begin:B$ -->
Line B-1
<!-- $begin:A$ -->
Line A-1
Line A-2
Line A-3
<!-- $end:A$ -->
Line B-2
<!-- $end:B$ -->

<!-- $begin:CONTENTS$ -->
Line CX-3
Line CX-4
<!-- $end:CONTENTS$ -->

Line C-3
Line C-4
<!-- $end:C$ -->

<!-- D ---------------------------------------------------------------------->
<!-- $begin:D$ -->
Line D-1

<!-- $begin:C$ -->
Line C-1
Line C-2
<!-- $begin:A$ -->
Line A-1
Line A-2
Line A-3
<!-- $end:A$ -->

<!-- $begin:CONTENTS$ -->
Line CX-D1
Line CX-D2
<!-- $end:CONTENTS$ -->

<!-- $begin:B$ -->
Line B-1
<!-- $begin:A$ -->
Line A-1
Line A-2
Line A-3
<!-- $end:A$ -->
Line B-2
<!-- $end:B$ -->

<!-- $begin:CONTENTS$ -->
Line CX-D3
Line CX-D4
<!-- $end:CONTENTS$ -->

Line C-3
Line C-4
<!-- $end:C$ -->

Line D-2
<!-- $end:D$ -->

<!-- E ---------------------------------------------------------------------->
<!-- $begin:E$ -->

<!-- $begin:E-A$ -->
Line E-A-1
Line E-A-2
<!-- $end:E-A$ -->

Line E-1
<!-- $begin:CONTENTS$ -->
Line EX-1
Line EX-2
<!-- $end:CONTENTS$ -->
Line E-2

<!-- $begin:E-A$ -->
Line E-A-1
Line E-A-2
<!-- $end:E-A$ -->

<!-- $begin:C$ -->
Line C-1
Line C-2
<!-- $begin:A$ -->
Line A-1
Line A-2
Line A-3
<!-- $end:A$ -->

<!-- $begin:CONTENTS$ -->
Line CX-E1
Line CX-E2
<!-- $end:CONTENTS$ -->

<!-- $begin:B$ -->
Line B-1
<!-- $begin:A$ -->
Line A-1
Line A-2
Line A-3
<!-- $end:A$ -->
Line B-2
<!-- $end:B$ -->

<!-- $begin:CONTENTS$ -->
Line CX-E3
Line CX-E4
<!-- $end:CONTENTS$ -->

Line C-3
Line C-4
<!-- $end:C$ -->

<!-- $begin:E-B$ -->
Line E-B-1
Line E-B-2
<!-- $end:E-B$ -->

<!-- $begin:CONTENTS$ -->
Line EX-3
Line EX-4
<!-- $end:CONTENTS$ -->

<!-- $begin:E-B$ -->
Line E-B-1
Line E-B-2
<!-- $end:E-B$ -->

<!-- $begin:CONTENTS$ -->
Line EX-5
Line EX-6
<!-- $end:CONTENTS$ -->

<!-- $end:E$ -->