B3311331313231311331322331333132313231333131323223313223313133313231131231   >>    B331133131323131133132233133313231323133313132322331322331313331323113123   <<    B3311331313231311331322331333132313231333131323223313223313133313231131233   >>      B3311331313231311331322331333132313231333131323223313223313133313231131232   >>