B3311331313231311331322331333132313233313231333131123313331323221123313222211   >>    B331133131323131133132233133313231323331323133313112331333132322112331322221   <<    B3311331313231311331322331333132313233313231333131123313331323221123313222213   >>      B3311331313231311331322331333132313233313231333131123313331323221123313222212   >>