B3311331313231311331322331333132333131333132233133313232233132322231231   >>    B331133131323131133132233133313233313133313223313331323223313232223123   <<    B3311331313231311331322331333132333131333132233133313232233132322231233   >>      B3311331313231311331322331333132333131333132233133313232233132322231232   >>