B3311331313231311331322331333132333132332113313331333132322331311212312321   >>    B331133131323131133132233133313233313233211331333133313232233131121231232   <<    B3311331313231311331322331333132333132332113313331333132322331311212312323   >>      B3311331313231311331322331333132333132332113313331333132322331311212312322   >>