I331323221311211331313233313331323223313113313112331323133312121   >>    I33132322131121133131323331333132322331311331311233132313331212   <<    I331323221311211331313233313331323223313113313112331323133312123   >>      I331323221311211331313233313331323223313113313112331323133312122   >>