I want to use SABmark as a benchmark for multiple sequence alignment. For that i can use Twilight Zone and Super- families sequence sets. But only the pairwise alignments of them are provided. Doesn't it want to provide real multiple sequence alignments for the comparisons of real alignment of these sequence sets with the alignments which are obtained using another tools like clustalW? Is there any way to do comparisons with only using pairwise alignments?