only report the first alignment between two rmaps to save output disk space
only report the first alignment between two rmaps to save output disk space

mmuggli/KOHDISTA,mmuggli/doppelganger,mmuggli/doppelganger,mmuggli/KOHDISTA,mmuggli/doppelganger,mmuggli/KOHDISTA,mmuggli/KOHDISTA,mmuggli/doppelganger