B3311331313231311331322331333132313132313331323223313231333131232322121   >>    B331133131323131133132233133313231313231333132322331323133313123232212   <<    B3311331313231311331322331333132313132313331323223313231333131232322123   >>      B3311331313231311331322331333132313132313331323223313231333131232322122   >>