D
D
D
D
F
F
U
50
D
D
F
F
U
U
U
D
D
F
F
U
U
U
51
D
F
F
U
U
U
U
D
F
F
U
U
U
U
52
D
F
F
F
F
F
U
D
F
F
F
F
F
U
53
D
D
F
F
F
F
U
D
D
F
F
F
F
U
54
F
F
F
F
F
F
F
D
D
D
D
D
D
D
55
D
D
F
F
F
U
U
U
D
D
D
D
D
D
In Table 4, D represents a downlink symbol, U represents an uplink symbol, and F represents a flexible symbol.