t
C
A10
X1
1
A11
X2
A12
X17
B10
X3
B11
X4
B12
X18
C10
X5
C11
X6
C12
X19
D10
X7
D11
X8
D12
X20
E10
X9
E11
X10
F10
X11
F11
X12
G10
X13
G11
X14
H10
X15
H11
X16