I331323221311211331313233313331323221333131333132322331323133313232223221   >>    I33132322131121133131323331333132322133313133313232233132313331323222322   <<    I331323221311211331313233313331323221333131333132322331323133313232223223   >>      I331323221311211331313233313331323221333131333132322331323133313232223222   >>