Fold this:
UCCUCUGUAGUUCAGUCGGUAGAACGGCGGACUGUUAAUCCGUAUGUCACUGGUUCGAGUCCAGUCAGAGGAGCCA
NUPACK: http://www.nupack.org/partition/new
Vienna RNAfold: http://rna.tbi.univie.ac.at//cgi-bin/RNAWebSuite/RNAfold.cgi
Sfold: http://sfold.wadsworth.org/cgi-bin/srna.pl
Constraint:
.........................x..................................................