B3311331313231311331322331333131133132333132333133313223313231323232131321   >>    B331133131323131133132233133313113313233313233313331322331323132323213132   <<    B3311331313231311331322331333131133132333132333133313223313231323232131323   >>      B3311331313231311331322331333131133132333132333133313223313231323232131322   >>