F33132311331311331312323223313231232313232233131322331323133313231333132211111   >>    F3313231133131133131232322331323123231323223313132233132313331323133313221111   <<    F33132311331311331312323223313231232313232233131322331323133313231333132211113   >>      F33132311331311331312323223313231232313232233131322331323133313231333132211112   >>