B3311331313231311331322331333132333132311211331333132322331323133112322123311   >>    B331133131323131133132233133313233313231121133133313232233132313311232212331   <<    B3311331313231311331322331333132333132311211331333132322331323133112322123313   >>      B3311331313231311331322331333132333132311211331333132322331323133112322123312   >>