N
M
X
N
S
Ta
s
n
I:
!Commit to 'node' was made outside it
w 
N
S
!Commit to 'node' was made outside it
Tb
s
n
b\x0a
x
i  
X
N
S
Tc
s
n
I:
!Commit to 'node' was made outside it
w 
N
S
!Commit to 'node' was made outside it
Td
s
n
b\x0a
x
m
n