99
RB
R
RR
B
B
B
B
R
R
B
R
R
B
B
BR
R
BB
R
B
RB
RR
R
RB
R
R
RR
BR
BR
R
R
R
B
R
R
B
R
B
RB
R
BB
B
RB
B
BR
R
R
B
RR
RB
B
B
RB
B
B
B
BB
R
R
R
R
RB
RR
BB
BR
R
R
RB
BB
B
BR
BR
RR
RB
R
R
BB
B
RB
BB
RR
RR
RR
B
RR
RR
R
R
B
B
BB
BB
BR
R
R
BR
BB
B
BB
RB