B3311331313231311331322331333132333133313223331211331333133313221211111111121   >>    B331133131323131133132233133313233313331322333121133133313331322121111111112   <<    B3311331313231311331322331333132333133313223331211331333133313221211111111123   >>      B3311331313231311331322331333132333133313223331211331333133313221211111111122   >>