cat(c("J10
K9
K11
L10","F1
G2
H3
J1
J4
K3
L1
L2","D5
E4
E6
F4
F7
G4
G5
G8
H3
H8
J4
J7
J8
K5
K9
L6
L9
M6
M9
N6
N8
O5
O8
P4
P7
Q3
Q6
R2
R5
S1
S4
T3")[sample(3,1)])
Note that non-ascii characters in the above source code will be escaped (such as \x9f).