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{16. [Exercise]/Anonymous}
b
c
1.ha   a
2f
#2d
xc
#3aa   a
x d
x c
x a
b
1.fc  a
2d
#2c da
xa   d
#3 d  c
x b  a
x a   d
x  d  c
b
1.da c a
2c
#2a   d
x d  c
#3 c  a
x a   d
x  d  c
x  b  a
b
1 aabc
1 aba d
#2 cdca
xa
#3aaa c
xc
2 e
b
Y.aa   a
b
b

e