B3311331313231311331322331333132233131133132233133313231333132333132233312331   >>    B331133131323131133132233133313223313113313223313331323133313233313223331233   <<    B3311331313231311331322331333132233131133132233133313231333132333132233312333   >>      B3311331313231311331322331333132233131133132233133313231333132333132233312332   >>