F33132311331311331312323223313231232313232233131322331323133311211   >>    F3313231133131133131232322331323123231323223313132233132313331121   <<    F33132311331311331312323223313231232313232233131322331323133311213   >>      F33132311331311331312323223313231232313232233131322331323133311212   >>