 L R8= 1;J S; W:I RZ& 1J S;P;J W;S:L R8=R8+1;P;I R8=1 J A;I R8=2 J B;I R8=3 J C;L R8=0 J D;A: A 1,(42,1)(43,1)(44,1)(45,1);P;P;P;L RZ=0;J W;B: A 1,(46,1)(47,1)(48,1)(33,1);P;P;P;L RZ=0;J W;C: A 1,(48,1)(47,1)(46,1)(45,1);P;P;P;L RZ=0;J W;D: A 1,(44,1)(43,1)(42,1)(41,1);P;P;P;L RZ=0;J W;?