B3311331313231311331322331333132313233313233213331333132313331323222322121121   >>    B331133131323131133132233133313231323331323321333133313231333132322232212112   <<    B3311331313231311331322331333132313233313233213331333132313331323222322121123   >>      B3311331313231311331322331333132313233313233213331333132313331323222322121122   >>