B3311331313231311331322331333132322121211111333132322331323112331   >>    B331133131323131133132233133313232212121111133313232233132311233   <<    B3311331313231311331322331333132322121211111333132322331323112333   >>      B3311331313231311331322331333132322121211111333132322331323112332   >>