B3311331313231311331322331333132333133313231332113313331333132321123221323111   >>    B331133131323131133132233133313233313331323133211331333133313232112322132311   <<    B3311331313231311331322331333132333133313231332113313331333132321123221323113   >>      B3311331313231311331322331333132333133313231332113313331333132321123221323112   >>