B3311331313231311331322331333132333132332113313331333133313221323131111   >>    B331133131323131133132233133313233313233211331333133313331322132313111   <<    B3311331313231311331322331333132333132332113313331333133313221323131113   >>      B3311331313231311331322331333132333132332113313331333133313221323131112   >>