B3311331313231311331322331333131133132333132333133313223313231323132213231121   >>    B331133131323131133132233133313113313233313233313331322331323132313221323112   <<    B3311331313231311331322331333131133132333132333133313223313231323132213231123   >>      B3311331313231311331322331333131133132333132333133313223313231323132213231122   >>