F33132311331311331312323223313231232313232233131322331323133313231211   >>    F3313231133131133131232322331323123231323223313132233132313331323121   <<    F33132311331311331312323223313231232313232233131322331323133313231213   >>      F33132311331311331312323223313231232313232233131322331323133313231212   >>