A
A
A
K
A
R
K
K
!
R
R
K
A
R
B
!
!
A
B
K
R
K
!
B
A
B
!
B
A
K
!
R
K
K
R
!
B
A
R
A
!
A
K
B
!
B
R
B
R
!
!
B
B
K