B3311331313231311331322331333132333133313231332113313331333132323213221211   >>    B331133131323131133132233133313233313331323133211331333133313232321322121   <<    B3311331313231311331322331333132333133313231332113313331333132323213221213   >>      B3311331313231311331322331333132333133313231332113313331333132323213221212   >>