B3311331313231311331322331333132333132332113313331333133313222321   >>    B331133131323131133132233133313233313233211331333133313331322232   <<    B3311331313231311331322331333132333132332113313331333133313222323   >>      B3311331313231311331322331333132333132332113313331333133313222322   >>