B3311331313231311331322331333132333133313231332113313331333132322132312231   >>    B331133131323131133132233133313233313331323133211331333133313232213231223   <<    B3311331313231311331322331333132333133313231332113313331333132322132312233   >>      B3311331313231311331322331333132333133313231332113313331333132322132312232   >>